Eric Thames Is Still Mashing

We never really know what to expect when a player comes to Major League Baseball from a foreign league. The rules of the game are mostly identical over there, of course, but the competition level is different. It’s a completely different set of hitters and pitchers in a completely different set of parks. Even for truly exceptional talents, there’s no real telling how a player’s skills will translate precisely from league to league. The calculus gets even more interesting when it involves a player who started here, faltered, went elsewhere, and thrived.

April is a time of guessing and extrapolating and of the occasional hot take. We like to draw conclusions when we perhaps shouldn’t. That’s half of the fun of April baseball. And Eric Thames is one of the cool new things happening in baseball right now. Because, as we’ve been reminded, this man can hit some dingers. He just finished hitting five in one series against the Reds.

Now, the Reds play in a tiny little stadium, and they don’t have the best pitching in the world. If Ryan Braun had been the one to do this, it would be a cool little footnote, because we expect guys like Braun to stomp on subpar pitching in tiny ballparks. If Jett Bandy had done this, I’d assure you that Jett Bandy is, in fact, a real person, and that this is an aberration.

Thames is a different matter. This is Eric Thames, who left American organized ball and rather quickly became a league-wide sensation in Korea. This is Eric Thames, who got big, grew a mighty beard, donned what looks like cybernetic robot armor on his right arm, and promptly started hitting massive bombs. Thames took on a nearly mythic quality for a few years, watched from afar by those who still remembered his name and who pay attention to foreign leagues. We got our wish, and he’s back. We get to see if a man who couldn’t cut it in his first try can succeed after dominating a foreign circuit. So far, he’s doing quite well.

It’s probably too early to declare the Thames experiment a success. It’s April 17th, after all. The Brewers have played 13 games, and Thames now has just 44 plate appearances under his belt. He’s already created 1 WAR of value, and that translates to about $8 million of value, but he could just as easily create negative value in the coming weeks as a scouting report starts to form. Baseball is, of course, also not played in terms of cost-effectiveness and surplus value. Thames wants to succeed for Thames, not to make David Stearns look smart. He’s still got a long road to go.

In short, we can’t tell anything for certain from this collection of data. There’s simply not enough here. But consider this, because it is the height of April fun: the two highest single-season ISO marks of all time belong, rather predictably, to Barry Bonds and Babe Ruth. Bonds put up a staggering .536 in 2001; Ruth, a much-lower-but-still-quite-impressive .473 in 1920.

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Eric Thames currently has a .553 ISO.

Barring a massive whiff by the scouting departments of 29 teams, it’s pretty safe to say that Thames isn’t going to keep that up. He’s not going to push 100 home runs for the season. He’s not going to regularly hit five home runs in four days. What, if anything, have we learned from this torrent of homers? Not a ton.

We know for a fact that Thames can punish mistakes. Here’s his first home run of the weekend, off Bronson Arroyo, who is still playing baseball.

If we isolate the moment right before Thames makes contact, we get this.

That’s about the last place you want to hang a 71 mph curve. For guys who are built like Thames — and even for a lot of guys who aren’t built like him — that’s batting practice. But Thames has looked as much of a masher here as he was in Korea. Here’s another one from this past series, where he hooks a pitch on the outer third way back into the seats.

This homer is a bit more interesting, because it might reveal a bit more about how Thames’ skills are likely to translate against major leaguers. The pitch here isn’t a meatball like some of the others. Robert Stephenson threw an offspeed pitch on the outer third of the plate, pretty much right where his catcher wanted it, and Thames hit the snot out of it. That’s good hitting and good extension.

Thames is hitting .368. Nine of his 14 hits being for extra bases. Extensive research and many experiments in a laboratory setting tell me that’s unsustainable. Eric Thames isn’t going to come back to MLB and win a triple crown. The Brewers may be on to something here, however. I initially dismissed the Thames signing as an interesting deal, but one more designed to save Milwaukee some pocket change than to put a championship-level player on the field. This may still yet be the case, but Thames may also be better than I gave him credit for.

Miller Park is also a nice place for power hitters to play, so Thames has that going for him. He’s also going to be spending a fair amount of time in Cincinnati and in Chicago. He’s going to have more than enough chances to send some balls over fences. Thames probably isn’t going to put up all-time power numbers. But he may have a fun case to be in the Home Run Derby.





Nick is a columnist at FanGraphs, and has written previously for Baseball Prospectus and Beyond the Box Score. Yes, he hates your favorite team, just like Joe Buck. You can follow him on Twitter at @StelliniTweets, and can contact him at stellinin1 at gmail.

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pedeysRSox
9 years ago

I was quite high on him, except that I expect him to be platooned against left-handers as he tends to struggle against them.

sadtromboneMember since 2020
9 years ago
Reply to  pedeysRSox

He already has been. That ridiculous batting line is pretty much against righties only.

Brad WesleyMember since 2025
9 years ago
Reply to  sadtrombone

2 of his 6 HRs so far are against LHPs

GDUBSSMember since 2026
9 years ago
Reply to  sadtrombone

Vs Lefties he’s 2 for 5 with 2 homers and a walk!

Seuss2004Member since 2018
9 years ago
Reply to  sadtrombone

I don’t get the downvotes here. Looking at the game log for Thames, he hasn’t started in three games this year, all against lefties. True, he hasn’t been benched in ALL games against lefties, but there is clearly some platooning going on. That’s not to say he can’t hit lefties, but his manager is clearly skeptical for now.

Im with Busey
9 years ago
Reply to  Seuss2004

I don’t think the he’s skeptical. They claimed Aguilar and he has nothing left to prove in AAA. He’s 1B only and you aren’t going to sit Braun, Broxton or Domingo vs a LHP.

I anticipate Thames taking some of, if not all, those plate appearances from Aguilar pretty quickly.

sadtromboneMember since 2020
9 years ago
Reply to  Seuss2004

I think they’re downvoting me because they think I’m saying he has struggled against lefties, but what I’m trying to say is that he’s been platooned against them. I’ll clarify.

sadtromboneMember since 2020
9 years ago
Reply to  sadtrombone

Good lord, that’s a lot of downvotes. The fact is, he has 6 PA’s against lefties and 38 against righties. I know that 38 PAs is also a small sample but it is pretty clear he has been platooned against lefties! That’s all I’m trying to say, not that he’s been struggling against them (because he hasn’t, and even if he has it is literally 6 PAs).

GDUBSSMember since 2026
9 years ago
Reply to  sadtrombone

But here’s the question. Would you have still used that wording in your original comment if you knew he was 2 for 5 with 2 homers vs lefties? I don’t think so. And that’s why you got some downvotes. Not every comment can be a winner!

sadtromboneMember since 2020
9 years ago
Reply to  GDUBSS

Actually, I looked at the numbers before I posted. So it’s not a hypothetical, I did use that wording knowing his numbers. Although I am pretty sure that reflects worse on me, knowing that and using that wording. Oh well. Life goes on.

Hacksaw Frank
9 years ago

Nooooo! Not the Home Run Derby! We need this guy in the second half too.

srriley84
9 years ago

His batting stance reminds me of someone’s, can’t quite put my finder on it…

Ryan DCMember since 2016
9 years ago

“Eric Thames isn’t going to come back to MLB and win a triple crown.”

But if he somehow did, where would it rank among the greatest sports stories of all time? Gotta be at least top 5 I’m thinking.

drewcorbMember since 2026
9 years ago
Reply to  Ryan DC

It would be a great story, but unless the Brewers won the World Series the same year that Thames returned from Korea and won the triple crown, I don’t think it would have a chance at cracking the top 5 baseball stories of all time, let alone all time sports stories. But I will admit that the “top 5 sports stories of all time” is definitely up to individual interpretation.

sadtromboneMember since 2020
9 years ago
Reply to  Ryan DC

I mentioned this elsewhere I think, but I want him to win the Triple Crown just because it would be hilarious to watch Nicholas eat his words on that.

HughesMember since 2016
9 years ago
Reply to  Ryan DC

It would be pretty darn close considering how hard winning a triple crown is now. Think of all the great hitters between 1967 and present day.

Bonds for example never had the most RBIs. In ’93 he was 1st for HRs, 3rd for RBIs (only league title he came first or second in), 5th for average. That was as close as he got.

plasmaj
9 years ago

Interesting swing. With so many guys moving to a leg kick for timing/power he has an impressively quiet lower half to deliver so much power.

sadtromboneMember since 2020
9 years ago
Reply to  plasmaj

Not only that, but he’s intentionally trying to get a level swing plane and hit line drives. Totally the opposite of the “uppercut” swing that has gotten a lot of press lately. I’ll post the article I saw on it where he talks about it.

http://www.sportsnet.ca/baseball/mlb/former-blue-jay-thames-returns-brewers-different-player/

CapricaCity
9 years ago

After week one, Thames was doing well but Brandon Belt was a free agent as someone dropped him for Greg Bird the week before. Seeing a chance for a bit of an upgrade I picked up Belt for $36 of FAAB and dropped Eric Thames. After a week of homeruns, I put in a bid to get Thames back, but another team got him for $225. I’m that guy, the one that dropped the player who is hitting like Babe Ruth. It stinks to be the worst. Now I know how Bronson Arroyo feels, or the entire Blue Jays team.

sadtromboneMember since 2020
9 years ago

The comment about the absurd number of extra-base hits got me thinking. So just for fun, I looked up the highest ISO’s since 2008 (an arbitrary cutoff because of Barry Bonds). Here are the ones with reasonably good batting averages (above 280, since that is a nice batting average) and ISO’s above .270. These are probably the absolute ceilings (and I mean what is literally possible) for someone to have in terms of ISO’s and still run a good batting average.

Season Name ISO BABIP AVG
2013 Chris Davis 0.348 0.336 0.286
2009 Albert Pujols 0.331 0.299 0.327
2015 Bryce Harper 0.319 0.369 0.330
2011 Jose Bautista 0.306 0.309 0.302
2016 David Ortiz 0.305 0.312 0.315
2009 Prince Fielder 0.303 0.315 0.299
2008 Albert Pujols 0.296 0.34 0.357
2010 Miguel Cabrera 0.294 0.336 0.328
2012 Josh Hamilton 0.292 0.32 0.285
2008 Ryan Ludwick 0.292 0.342 0.299
2015 Mike Trout 0.29 0.344 0.299
2013 Miguel Cabrera 0.288 0.356 0.348
2015 Nolan Arenado 0.287 0.284 0.287
2010 Albert Pujols 0.284 0.297 0.312
2008 Carlos Quentin 0.283 0.278 0.288
2012 E. Encarnacion 0.277 0.266 0.280
2012 Miguel Cabrera 0.277 0.331 0.330
2012 Ryan Braun 0.276 0.346 0.319
2010 Joey Votto 0.276 0.361 0.324
2016 Nolan Arenado 0.275 0.293 0.294
2014 Mike Trout 0.274 0.349 0.287
2010 Josh Hamilton 0.274 0.39 0.359
2009 Mark Teixeira 0.273 0.302 0.292
2009 Derrek Lee 0.273 0.327 0.306
2010 Paul Konerko 0.272 0.326 0.312
2015 Josh Donaldson 0.271 0.314 0.297
2008 Alex Rodriguez 0.271 0.328 0.302
2008 Manny Ramirez 0.27 0.37 0.332

hurricanexyzMember since 2016
9 years ago
Reply to  sadtrombone

Slightly tangential but I’ve always marveled at prime Pujols’s ability to have his actual batting average be consistently higher than his batting average on ball in play.

phoenix2042Member since 2016
9 years ago
Reply to  hurricanexyz

How is that possible though? Have more home runs than strike outs, right? But there must be more going on because of this example: 2006, Pujols…
had a BABIP of .292 and BA of .331.
had 49 home runs against 50 strike outs
had 3 sacrifice flies (which are not in BA maybe in BABIP?)

So there must be a positive event that contributes to BA but not BABIP besides HR that I am not thinking of, or a negative event that contributes to BABIP but not BA besides sac flies.

Can anyone help?

phoenix2042Member since 2016
9 years ago
Reply to  phoenix2042

Similar example:
2016, Nolan Arenado…
had a BABIP of .325 and a BA of .327
had 41 HR and 103 strike outs
had 8 sac flies, no sac bunts

So what batted ball event occurred the roughly 60 times needed to make up for the difference between homers and strikeouts to even out his BABIP and BA?

dl80Member since 2026
9 years ago
Reply to  phoenix2042

BABIP formula: (H-HR)/(AB-K-HR+SF)
BA formula: H/AB

So the reason is that subtracting HR from both the numerator and the denominator of BABIP causes that overall number to be lower. Since there are other elements included in the denominator that aren’t included in the numerator (K+SF), removing HR has a more significant effect on the numerator.

Imagine an easier example: (100 H-50 HR)/(300 AB-50K-50HR+0SF) = 50/200 = .250 BABIP

vs. 100/300 = .333 AVG

When a player has significantly more Ks than HRs, it goes the other way.

(100H-50HR)/(300AB-150K-50HR-0SF) = .500 BABIP

That’s why most players have a BABIP higher than their batting average.

Even a guy like Ender Inciarte will usually run a BABIP higher than his average because of the disparity between Ks and HR: (100H-5HR)/(300AB-50K-5HR-0SF) = .387 BABIP.

Joe Sewell in 1932 is a good example the other way (and one of the few).

(137H-11HR)/(503AB-3K-11HR-?SF) = .252 BABIP

137H/503 AB = .262 Average

It’s very very hard to have an average above your BABIP. It takes either more HR than K or a lot of HR and not a ton more Ks.

Captain Tenneal
9 years ago
Reply to  dl80

Ignoring SF because they’re annoying, your HR/K ratio must be equal to your H/Outs ratio to have BA and BABIP the same. Assuming a .300 BA gives 3 Hits/7 outs, so you need 30 HR and 70 K to have a .300 BABIP and BA.

At a .500 BA, you must have equal HR and K numbers.

hurricanexyzMember since 2016
9 years ago

Yes, that’s right. You don’t need to have more home runs than strikeouts, you just need your batting average on balls not in play (i.e. HR/(HR+K)) to exceed your batting average on balls that are in play. Which, not a lot of guys do these days…

sadtromboneMember since 2020
9 years ago
Reply to  phoenix2042

“How is that possible though?”

Do, or do not. There is no try.

Groundout
9 years ago
Reply to  sadtrombone

It seems like this is a roundabout way of looking at slugging percentage — not the fanciest stat, but pretty much exactly what we’re looking for. This is a fun post, but I feel like we can be simpler:

-The highest slugging percentage in your time window is Pujols’ 2009 (658).
-Fewer than ten hitters per season have a slugging percentage of 550.
-About one hitter per season slugs 600.
-The only hitters to slug 800 in a season are Ruth (twice) and Bonds (twice).
-Thames is slugging 921.

sadtromboneMember since 2020
9 years ago
Reply to  Groundout

Good point. Not as fun, but more straightforward. Let’s see, since 2008, we have the top 20 slugging %’s:
Season Name AVG SLG BABIP
2009 Albert Pujols 0.327 0.658 0.299
2008 Albert Pujols 0.357 0.653 0.340
2015 Bryce Harper 0.330 0.649 0.369
2013 Miguel Cabrera 0.348 0.636 0.356
2013 Chris Davis 0.286 0.634 0.336
2010 Josh Hamilton 0.359 0.633 0.390
2010 Miguel Cabrera 0.328 0.622 0.336
2016 David Ortiz 0.315 0.620 0.312
2010 Jose Bautista 0.260 0.617 0.233
2011 Jose Bautista 0.302 0.608 0.309
2012 Miguel Cabrera 0.330 0.606 0.331
2009 Prince Fielder 0.299 0.602 0.315
2008 Manny Ramirez 0.332 0.601 0.370
2010 Joey Votto 0.324 0.600 0.361
2010 Carlos Gonzalez 0.336 0.598 0.384
2011 Ryan Braun 0.332 0.597 0.350
2010 Albert Pujols 0.312 0.596 0.297
2012 Ryan Braun 0.319 0.595 0.346
2016 Daniel Murphy 0.347 0.595 0.348
2008 Ryan Ludwick 0.299 0.591 0.342

So uh, looks like Pujols, and Cabrera, and Bautista are about as good as you’re going to get these days. So I would also bank on a regression from his .921 slugging percentage, just like our author suggests. I would also love it if–just to show up Nicholas here, not saying it’s likely–he continued to slug his way to a Cabrera-like year and won the Triple Crown. Would be hilarious! Even if it won’t happen.

RoyMember since 2016
9 years ago

I overpaid for Thames in my mixed auction (although still below what the laughably aggressive projections said he was worth) just so I could cheer for him and profit if those projections proved correct. For selfish reasons, I hope he keeps this up just to see the stadium signs saying “I’m ‘Ric Thames, b**ch!”

AnonMember since 2025
9 years ago

I hate to post a negative comment because I think Thames is a great story and I hope he does well but his HR have come off Tyler Chatwood, Bronson Arroyo, Wandy Peralta, Robert Stephenson, Tony Cingrani, and Tim Adleman. The BEST projected FIP in that group is Chatwood at 4.38. Oh, he’s also homered at parks with LH HR factors of 112 and 114, 2 of the 5 best HR parks for lefties.

Graves
9 years ago
Reply to  Anon

The Author conceded that he faced weak pitching in a hitters park, but also points out that Thames home ballpark is very hitter friendly and that he will have a chance to hit in lots of hitter friendly parks thanks to CIN and CHI. Those HR’s still count, and all great hitters get most of their stats by feasting on weak pitching.

ericmilburn
9 years ago
Reply to  Anon

A common concern I had heard was that the Thames’ bat would not be able to catch up to elite velocity. While none of the pitchers he’s homered off thus far were aces, a couple of them did bring Plus velocity; two of his homers were off 96 MPH fastballs. Purely anecdotal, but it seems to partially answer the question of his bat speed.

dclynch
9 years ago

“It’s probably too early to declare the Thames experiment a success. It’s April 17th, after all. The Brewers have played 13 games, and Thames now has just 44 plate appearances under his belt. He’s already created 1 WAR of value, and that translates to about $8 million of value, but he could just as easily create negative value in the coming weeks as a scouting report starts to form.”

Fair enough, but the entire guaranteed portion of his 3/4 year contract is about $16M. In 44 plate appearances, he’s already accumulated about half the market value the Brewers might have expected. Thames won’t keep this pace up, but all he has to do is match the value in the remaining 149 games that he provided in the first 13 in order to justify his entire contract in year 1.

I agree he won’t keep this pace up, but I don’t think he has to do anything close to that to justify 29 scouting departments thinking they whiffed.

Chickensoup
9 years ago
Reply to  dclynch

This is pretty much how I view it. The team needed about 3 WAR over 4 years (including the probable option year pickup) to make this a market value signing. That’s basically Chris Carter, who he replaced. He should be able to do that IMO.

Lineuplab
9 years ago

Thames absolutely crushed Cincinnati pitchers getting 8 hits in 20 AB’s (.400). 5 of his 6 Homerun’s were versus the Reds. It’ll be interesting to see how he fares against the Cubs rotation.

wily moMember since 2020
9 years ago
Reply to  Lineuplab

the reds bullpen has actually been pretty good this year. three of the pitchers thames got (cingrani, wandy p, adleman) have combined to pitch 13 innings so far in 2017, with 17 Ks vs 3 walks, and 3 runs allowed, all of them on home runs by thames

then there’s bronson arroyo

exxroxMember since 2026
9 years ago

“This is Eric Thames, who got big, grew a mighty beard, donned what looks like cybernetic robot armor on his right arm, and promptly started hitting massive bombs.”

Ehh. Thames was always jacked. I remember back in his Blue Jays days we always joked about his massive arms.

spiralstairs
9 years ago

What exactly is the story from back in 2012/2013? It looks like his career was taking a normal ‘good’ trajectory up until 2012 where he was then traded around and put back in AAA. Character issues? Unwilling to adjust/learn? I just don’t buy the ‘flamed out’ reasoning… there must be more to it

wubbie075
9 years ago
Reply to  spiralstairs

Actually it is the opposite of those reasons. There’s an article (maybe on FG somewhere but don’t remember) with an interview where Thames described what happened. He was asked to make adjustments by TOR and those adjustments took him out of his comfort zone and caused his K% to spike and BB% to plummet. If he had been more obstinate and ignored his coaches he may have had more success.

sadtromboneMember since 2020
9 years ago
Reply to  spiralstairs

Part of the reason Thames was so insistent on having a starting role if he came back to MLB was that he thought his inconsistent playing time when he hit the majors really hurt his development. The other part was probably just because having a starting job is what baseball players want, but I think he felt like he might struggle in a bench role.
Another issue that he has brought up is that he felt like he was playing defense against the pitcher too much in his first MLB stint. He was spending so much time trying to make contact with the ball that he wasn’t driving the ball. According to him, now he has confidence that he can drive the ball and is doing that.
He’s also totally redone his swing so it’s more of a line-drive swing. He wants to be “short to the ball”.
So there are a lot of explanations for why he’s doing differently now than before, and what he’s doing better this time around. But the most likely situation why he flamed out is because that’s what most prospects do, even the supposedly “safe” ones.