Kevin Kiermaier is underrated. How do I know? I guess I don’t know, but by and large, Kiermaier is not considered one of the best players in baseball. This despite having performed like one of the best players in baseball. The last three years, by WAR, Kiermaier has been as valuable as Robinson Cano, Andrew McCutchen, and Yoenis Cespedes, all while collecting far fewer plate appearances. Kiermaier is projected to be as valuable as Carlos Correa and Giancarlo Stanton. The numbers are in love, and they paint a certain picture. Kiermaier is presently the most important player on his team.

Being a FanGraphs reader, you at least kind of know what Kiermaier is about. He’s underrated because his standout skill is outfield defense, and he swings a roughly average bat. I’ll say this: Although Kiermaier’s UZRs are extreme, DRS loves him even more. He has a career outfield UZR of +60. He has a career outfield DRS of +81. That would be another two wins, more or less.

So, the major reason Kiermaier’s underrated: His strongest skill is underrated. Beyond that, it doesn’t help him that he’s played for a nationally invisible ballclub. Let me add a third reason. For this part, I’m going to call in Jorge Soler.

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There was much focus, understandably, on the Dodgers’ addition of Logan Forsythe to their club. He’s a valuable player who fills a large-market NL contender’s most glaring need.

There was less attention on the small-market Rays and where they go in 2017 after trading Forsythe, who projected to be their third most valuable position player this coming season. They are a team that projects to be in the postseason picture in 2017.

The Rays continue to be opportunistic, as they have to be, and continue to trade some of today for more of tomorrow. They didn’t really need Mallex Smith, at least not immediately, but they acquired him as the headline piece in the Drew Smyly deal. Smith adds controllable years and surplus value. They don’t really need Jose De Leon, not immediately, but he offers more future surplus value and controllable years. And it’s possible he’s one of the Rays’ top-five starting options in 2017. According to Steamer, he will be just that.

Dave Cameron wrote last week that the Rays did well in the trade. When a team can land a pitcher who has six years of control — and who’s projected by Steamer to record 2.4 WAR as a starter — for a second baseman who’s more of a useful short-term asset (Forsythe has a club option for 2018) than a franchise building block, it’s generally a value-adding transaction.

But my purpose in writing this piece is not to argue the logic or rationale of those transactions, rather to look at the remaining opportunity for the Rays in regard to 2017.

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At long last, the Dodgers found a solution to their hole at second base, acquiring second baseman Logan Forsythe from the Rays on Monday night in exchange for top pitching prospect Jose De Leon. This came after months of rumors around a trade involving De Leon and Brian Dozier. The Dodgers had a surplus of starting pitchers and an opening at second, so it was only a matter of time before they dealt the unproven De Leon.

De Leon’s first crack at the big leagues — a four-start cameo in September — didn’t go quite as well as many had hoped. But he breezed through the minors over the last two years. He broke out in a big way in 2015, striking out an absurd 35% of opposing hitters between High-A and Double-A while walking just 8%. That performance made him a consensus top-30 prospect the following winter.

De Leon battled injuries in the first half of 2016, but began dominating again once he returned to the field. In 16 starts at the Triple-A level, he once again posted a strikeout rate well over 30%, along with solid walk and home-run numbers. De Leon proved himself at the highest level of the minors at the tender age of 23. Pitchers who meet that standard often go on to have success in the majors, especially when they miss bats as prolifically as De Leon did.

De leon grades out exceptionally well by my KATOH system. It projects him for 8.1 WAR over his first six seasons by the traditional method (KATOH) and also 10.1 WAR by the method that integrates Baseball America’s rankings (KATOH+). He’s the 13th-highest-ranking prospect by KATOH+ and the third-highest-ranking pitcher.

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Sometimes there are trade rumors that aren’t really true. We tend not to know about those until after the fact, but the false rumors tend to be the fleeting ones. Then there are the rumors that just don’t go away. That’s when you know there’s smoke. And there was all kinds of smoke billowing out of the rumors that linked the Dodgers to Brian Dozier.

It all added up, and there was no point in anyone issuing any denials. The Dodgers needed a second baseman, and Dozier is a good one. The Twins could stand to flip some quality assets, and Dozier is a good one. We got to know more than we usually do — the Dodgers put Jose De Leon on the table. That’s where the teams got stuck. The Dodgers liked what they’d be getting, and the Twins felt the same. They just couldn’t reach an agreement on a second prospect to go to Minnesota. The Twins held out, and the Dodgers wouldn’t budge.

And so, in the end, the Dodgers haven’t added Brian Dozier. Instead, they called up the Rays, and added basically Brian Dozier. The cost was De Leon, and nothing else.

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How good is Kevin Kiermaier, defensively? Kevin Kiermaier is this good, defensively: Since 2003, 148 different players have played center field for at least 1,000 innings. Kiermaier leads all of them, so far, in UZR per 150 games. In case you’d like a second source, Kiermaier also leads all of them in DRS per 150 games. DRS actually likes him even more than UZR does. Obviously, because Kiermaier isn’t yet 27, we haven’t seen his decline phase. At some point, he will become a worse defender, because at some point, he will wake up and be a 75-year-old man. But Kiermaier is like an outfield Andrelton Simmons, except that, oh, by the way, Kiermaier can also hit a little.

It’s fun to examine the great ones. It’s fun to examine when the great ones are great, and sometimes it’s even more fun to examine when the great ones are not great. So I rolled over to Baseball Savant to check out Kiermaier’s plot of base hits allowed. This is a new feature, and an awesome one, and here’s what shows up for Kiermaier’s 2016:

By hang time and distance, pretty much everything here is some variety of a difficult play. Or, for many, an impossible play! There’s only one missed play that counts as either routine or easy, and you see it there within the red circle. Curious, I asked Daren Willman if he could tell me when that play occurred. He gave me the information I needed. What catch did Kevin Kiermaier miss? We rewind to early August.

The ball hung up for more than six seconds. That’s a lot of time, and it allowed Kiermaier to cover more than 100 feet of ground. Here’s a screenshot of right around where Kiermaier started, with a dot to indicate where the ball bounced off the fence.

And, the fateful moment, or thereabouts:

There’s a twist here, see. This shows up as a missed play for Kiermaier, but it’s not entirely clear this was Kiermaier’s ball to catch. Certainly, that much wasn’t clear to left fielder Mikie Mahtook, who mis-everythinged his leap. Kiermaier was right there, and it looked like he had a shot, but at the last instant, he held up, with Mahtook taking to the air. What we can’t tell from the broadcast or from the replays is whether either player called off the other. What we can tell is that Mahtook took charge. In most cases, an outfielder here will defer to the guy playing center. He tends to be the defensive captain of the outfield, so to speak. Mahtook defied convention, and Jose Bautista wound up with a double.

Why the miscommunication? It’s impossible for us to conclusively say, and it’s not like the Rays aren’t used to having Kiermaier in center field. But Kiermaier wasn’t used to having Mahtook to his right. This play happened early in the first inning on August 9. The first time this past season that Kiermaier was in center, with Mahtook in left: the first inning on August 9. It took two batters for that alignment to be exploited, and it might not be a total coincidence that Mahtook’s newest baseball future will take place with Detroit. When you get in the way of Kevin Kiermaier’s defense, a team won’t take it lightly.

This is how Kevin Kiermaier missed his easiest catch. The ball was a near home run, and another player tried to leap for it first.

It’s true that, if you look at the free agents who remain unsigned this offseason, you’ll find a lot of power still available. Franklin Gutierrez, Mike Napoli, Mark Trumbo: all three produced an isolated-slugging figure greater than .200 last season. All three are projected by Steamer to produce better than a .195 ISO in 2017. All three have yet to find a team for the 2017 season.

Given the general demand for power, you might wonder why so many of these sluggers don’t have jobs yet. A look both at the supply and the demand in the league reveals a possible cause, however: handedness. There might be an obstacle, in other words, to matching those free agents with the right teams.

To illustrate my point, let me utilize the depth charts at RosterResource. What’s nice about RosterResource, for the purposes of this experiment, is that the site presents both a “go-to” starting lineup and also a projected bench. Here’s a link to the Cubs page to give you a sense of what I mean.

In most cases, a team will roster four non-catcher bench players. Looking over the current depth charts, however, I find 15 teams with only three non-catcher bench players on the depth chart (not to mention five additional bench players who are projected to record less than 0 WAR). For the purpose of this piece, let’s refer to these as “open positions.”

Fifteen! That’s a lot. It means we’re likely to see quite a few signings before the season begins. Of course, not all these openings are appropriate for the power bats remaining on the market. Most of those guys are corner types, if they can play the field at all, while some of those 15 clubs have needs at positions that require greater defensive skill.

For example, Anaheim might need an infielder or a third baseman for their open bench spot. The White Sox need a right-handed center fielder to platoon with lefty Charlie Tilson. Detroit needs a center fielder, maybe a right-handed one — and in the process of writing this piece, they got one in the form of the newly acquired Mike Mahtook maybe. If Mel Rojas Jr. can’t play center in Atlanta, they need a (right-handed?) center fielder, too. The Yankees may need a third baseman — and, if not that, definitely someone with some defensive ability on the infield.

So that reduces the number of open positions to 10. That’s 10 slots that could be filled by an offensive piece with little defensive value. Here are the teams that, by my estimation, have an opening for a slugger: Baltimore, Boston, Chicago (NL), Cleveland, Kansas City, Minnesota, Oakland, Seattle, Tampa, Texas, and Toronto.

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The last time I saw Drew Smyly, it was during one of the lowest points of his career. It was July and he’d just completed a stretch of 20.2 innings over which he’d allowed 21 earned runs. He’d been assured that his job was secure, for the moment, but when a local beat writer asked him how it felt, the pitcher had a hard time looking up, doing his best to provide an honest answer before moving on to the next question — any other question, please. I obliged, and asked him about the home runs, pointing out that his strikeouts and walks were fine. Up came the eyes, and on was the conversation.

Back then, the focus for me was organization-wide: the Rays got hit harder by the home run bug last year than most teams, perhaps because they threw more high fastballs than any other team in the league. And yeah, Smyly, because of the unique nature of his stuff, will always throw high in the zone, and will always give up a few more homers than most.

But we did talk about Smyly’s particular issues last year, and what he was planning on doing about it. And it looks like he capitalized on that conversation somewhat, because things changed a bit from that day forward. The real question, though, is did it change enough?

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We know a few things for certain regarding Mallex Smith, who was acquired by Tampa Bay along with two prospects for left-handed starter Drew Smyly on Wednesday.

For starters, he’s fast.

And that speed allows him to cover considerable ground, and overcome less than perfectly efficient routes, in the outfield …

He has 80-grade speed, according a number of evaluators, and stole bases at a 79.2% rate over five minor-league seasons.

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The Seattle Mariners made a pair of moves yesterday, the first of which featured the acquisition of OF Mallex Smith from Atlanta in exchange for pitching prospects Thomas Burrows and Luiz Gohara. They then turned Smith around and sent him to Tampa along with teenage INF Carlos Vargas and LHP Ryan Yarbrough for LHP Drew Smyly. Below are scouting reports on the prospects involved — as well as for Smith himself.

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The Mariners continued their early-January flurry of activity yesterday, swinging two trades in short succession. First, they dealt left-handed pitchers Thomas Burrows and Luiz Gohara to the Braves for Mallex Smith and intriguing arm Shae Simmons. They promptly flipped Smith, along with prospects Carlos Vargas and Ryan Yarbrough, to the Rays for Drew Smyly.

The most interesting players in this deal are likely the two who’ll make an immediate big-league impact — Smith and Smyly — the former of whom KATOH adored heading into 2016. But the other players changing hands also have their merits. Here’s what my KATOH system has to say about the players who spent most of 2016 playing in the domestic minor leagues.

Note that new Atlanta prospect Burrows is omitted due to a lack of professional experience; new Tampa prospect Vargas, because KATOH doesn’t account for Dominican Summer League numbers, which are the only sort Vargas has produced. KATOH denotes WAR forecast for first six years of player’s major-league career. KATOH+ uses similar a methodology with consideration also for Baseball America’s rankings.

*****

Luiz Gohara, LHP, Atlanta (Profile)

KATOH: 3.1 WAR
KATOH+: 2.7 WAR

Gohara posted an ERA well above 5.00 over his first three seasons as a pro, but really found his groove last year as a 19-year-old. In 15 starts across two levels of A-ball, he pitched to a dazzling 3.04 FIP on the strength of a 29% strikeout rate. Gohara was one of the more dominant arms in the low minors.

KATOH isn’t completely sold yet, though, as Gohara has a few negative variables in his profile. For one, he was decidedly bad as recently as 2015, which wasn’t terribly long ago. He’s also never pitched above Low-A, meaning he’s largely untested against high-quality hitters and still has a few years of development that have yet to occur. Even his strong 2016 numbers came in a small sample — 79 innings — so KATOH’s a bit skeptical of the track record he does have.

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