MLB Has Clarified Its Carter Capps Position

Baseball announced a handful of rule modifications today. For the most part, they’re concerning pace-of-play adjustments — there’s the modification about the new, automatic intentional walk, and there’s a line in there about a two-minute guideline for determinations on replay reviews. There’s nothing in there that should cause too much of a stir. We were given plenty of warning about the intentional walks. Yet one bullet point stands out from the others:

  • An addition to Rule 5.07 stipulates that a pitcher may not take a second step toward home plate with either foot or otherwise reset his pivot foot in his delivery of the pitch. If there is at least one runner on base, such an action will be called a balk under Rule 6.02(a). If the bases are unoccupied, then it will be considered an illegal pitch under Rule 6.02(b).

With that, baseball has moved to clarify and formalize its position on Carter Capps‘ delivery.

It should be considered a direct and, all things considered, swift response to Capps’ demonstrated throwing motion from the other week. In case you’ve forgotten, here’s how Capps looked in an early throwing session with the Padres:

Where there had previously been one hop, suddenly there were two. Capps hopped off the rubber, then hopped forward again, and even though this was just spring-training work in the bullpen, a throwing motion is a throwing motion. If two hops would be allowed, why not three? Why not four? Why not a couple dozen? What would stop a pitcher from hopping all the way to the front of the plate before essentially handing the ball off to the catcher? I’m not sure how it took until 2017 to get people to think about this, but I suppose Carter Capps is something of a pioneer.

And now, officially: nope. Can’t do that. Can’t double-hop. You can do it all you want in the bullpen, but in a game, that’s a ball or a balk, depending on the circumstances. Now there’s a barrier in front of that particular slippery slope.

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Yet if you listened to Capps and the Padres, that early throwing motion was never going to be the regular-season throwing motion. Capps is still coming back from surgery, so he’s being conservative about how he’s pushing himself, and he’s in the process of building up arm strength. The goal is to get back to what Capps was. This is what Capps was:

He was weird before he was weird. Importantly, MLB determined the above delivery was legal. Based on their own interpretation of the rules, MLB gave Capps’ motion its blessing, so long as he didn’t jump *up*. It was emphasized that Capps would have to drag his back foot. So it remains. From the various indications, baseball’s stance hasn’t changed, and it’s still okay with Carter Capps, circa 2015.

Further:

One hop is fine, while 2+ are not. There was Jordan Walden, and now there is Carter Capps. The way baseball explains it, there’s nothing wrong with the way Capps throws, so long as there’s something of a “drag line” in the dirt. It should be clear from the Marlins video embedded above that any such drag line would be faint. The video isn’t in sufficient resolution to tell, but I’m not sure Capps is dragging at all. In that one clip, I’m pretty sure Capps’ back foot comes off the mound before re-positioning itself. Maybe Capps is working on that today. Maybe he’s consciously trying to drag. It’s going to be difficult; drag the foot too hard, and it’ll throw off Capps’ momentum. It’s important to point out how difficult it is to throw like Carter Capps does in the first place.

With MLB having formalized its stance here, it’s natural to wonder what comes next. Capps is likely to generate a bunch of strikeouts again. But I wonder if he’s going to be susceptible to opposing manager challenges. There’s no point in challenging anything, really, with the bases empty, but say Capps is pitching with runners on first and second. Or, say Capps is pitching with a runner on third. Might a manager come out and ask the umpires to look for a drag line, after a pitch has been thrown? If no such line is visible, could they then call a balk, advancing the runner(s)? Or would that not be allowed? Capps, in order to protect himself, could always etch a drag line when he’s out there making his warm-up throws. This part gets complicated.

And you always have to wonder about mimicry. This has been one of the concerns ever since Capps made his first headlines. Officially, you can throw like this. It would appear to confer an advantage, if you can perfect the muscle memory. There’s no other pitcher in the majors right now who does this. I haven’t heard of anyone in the minors, either — I chased a potential lead last week, but it turned out to be false. Adjustments could be coming, though. Among professionals, you’d be most likely to see these tweaks among fringe-y types and hangers-on. It’s like trying a sidearm delivery or messing around with a knuckleball. And I’m sure there’ll be younger players all over the place who give this a try, if only for fun. Professional baseball draws from the youth players, and baseball’s youth has always enthusiastically imitated the stars at the highest level. Capps is a young and hard-throwing strikeout machine.

For now, you could say this is more good than bad. Capps is one guy, and he’s atypically interesting. He’s good without being too good, and MLB blocked the most egregious delivery type. And one should remember Capps isn’t good just because of the way he throws — he had a high-90s fastball even before his hopping went extreme, and he stands 6’5. Yet Capps’ delivery is right on the edge of permissible, and there will be opposing teams who want to catch him in violation. And as longer-term considerations go, Carter Capps is unlikely to be the last professional pitcher to throw like Carter Capps. MLB has signed off on this, and the throwing motion seems to be helpful. There’s no shortage of pitchers who want to give themselves some help.





Jeff made Lookout Landing a thing, but he does not still write there about the Mariners. He does write here, sometimes about the Mariners, but usually not.

44 Comments
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mattMember since 2023
9 years ago

Capps said like the same day or next day video came out of his delivery that he hasn’t changed it at all and it’s just to work on mechanics. Shouldn’t be hard for a guy like you to find, but hey you’ll get your free clicks for a article that says nothing we don’t know. You are almost always better than that

Art VandelayMember since 2025
9 years ago
Reply to  matt

“Yet if you listened to Capps and the Padres, that early throwing motion was never going to be the regular-season throwing motion. Capps is still coming back from surgery, so he’s being conservative about how he’s pushing himself, and he’s in the process of building up arm strength. The goal is to get back to what Capps was.”

This is from the article above that you clearly didn’t read.

BipMember since 2016
9 years ago
Reply to  Jeff Sullivan

Chaz Roe threw the most interesting pitch I have EVER seen. I am so stoked for this.

On the off-chance you see it, this is the pitch:

https://gfycat.com/FabulousYoungAllosaurus

victorvran
9 years ago
Reply to  Bip

Damn, is that photoshopped?

BipMember since 2016
9 years ago
Reply to  victorvran

PitchFX doesn’t think so

look at that. 17 inches. It runs off the chart entirely.

TKDCMember since 2016
9 years ago
Reply to  Bip

great take by the batter.

bwMember since 2016
9 years ago
Reply to  matt

Alternate hot take: I wasn’t going to find the tweets from Lin, but I come by FanGraphs when there’s news to see some reasoned assessment of what just happened, and that information is new and helpful to understanding the situation.

victorvran
9 years ago
Reply to  matt

Serious question, how is altering the mechanics of your normal hop pitch to 2 hops helping you work on your mechanics for your single hop/drag delivery? Seems counter intuitive to me. Did he explain more thoroughly what he meant?

tramps like us
9 years ago
Reply to  matt

wow….minus 176, is that a new record? Impressive! And I thought my “Kershaw is not a god” comment with minus 50-something was pretty, uh, good. I bow to your badness.

dtpollittMember since 2016
9 years ago

I am totally against this illegal motion, but I am totally for seeing how far Capps and others can bend the rules. And I’m excited to read about Sullivan chasing “Potential Capps Deliveries” stories for the next season or three.

CC AFCMember since 2016
9 years ago
Reply to  dtpollitt

I wonder if Capps’ old (now current) delivery is now basically maximized? I can’t imagine someone could manage to get much further toward home plate on one hop while still dragging their toe than he does. Also, maybe there’s some benefit to still landing on the downhill portion of the mound instead of further toward flat ground, even if you could get there?

I hearby second the motion for an article re: what kind of crazy stuff you could do still pull off within the rules

iBEGuRGaRDeN
9 years ago
Reply to  dtpollitt

This is gonna be the new version of switching to submarine arm slot. Last ditch effort for players that have hit their ceiling below MLB level.

Sabometrics
9 years ago

Fake delivery. Totally illegal.

TrevorCap
9 years ago
Reply to  Sabometrics

Sad!

bring on the dancing bearsMember since 2017
9 years ago

I’m confused. The new rule states that the pitcher may not “reset his pivot foot in his delivery of the pitch.” But in the old Marlins’ clip, Capps is clearly resetting his pivot foot, drag line or no. So isn’t it clearly illegal?

Johnston
9 years ago

Yes, it’s clearly illegal.

bwMember since 2016
9 years ago

I feel like they were trying to actually revert the decision on the 2016 delivery, but Lin’s tweet seems to be clear that they allowed the 2016, but had a “NOPE” reaction to the Padres recent tweet.

jcutigerMember since 2024
9 years ago

Sweet, Capps is turning the MLB into women’s fastpitch softball.

JUICEMANE
9 years ago

Next rule change will be Urias’ pick off move.

bly
9 years ago
Reply to  JUICEMANE

No need.

phoenix2042Member since 2016
9 years ago

If I were a manager, I wouldn’t care how annoying it is for the fans, and I would ask the umpires to check for a drag line after every single pitch. I would watch like a hawk for him making an artificial line before throwing (or while walking around the mound). Hopefully after every check, the umpires will wipe the sand clean so you can see it on the next pitch.

The fans would be so pissed about the delay of game, but if you can get even 4 or 5 called balls for illegal delivery, that’s significant run value. And if you can get a balk or two with runners on,that’s huge. And let’s be honest, he drags the back foot well less than half the time. If you consistently challenge him, you will catch him plenty.

The fans may boo the constant interuption, but when you get an automatic ball for a walk and then get a couple of balks to advance the runner and he scores on an out to win the game (which wouldn’t be possible without the challenges), the fans will forgive you. Winning clears all sins.

bly
9 years ago
Reply to  Jeff Sullivan

That’s last pictches drag, where is this one?

LightenUpFGMember since 2018
9 years ago

If Capps gets a few hops forward, I want to see batters now do a few hops backwards to give themselves a bit more time to see a pitch come in. If it means possibly cracking catcher skulls with a swing, the catchers must learn to duck.

BryzMember since 2019
9 years ago
Reply to  LightenUpFG

There is such a thing as the batter’s box, you know.

Member since 2026
9 years ago
Reply to  Bryz

And there is a thing called a Pitching Rubber, it’s the thing the pitcher is supposed to maintain contact with.

soddingjunkmailMember since 2016
9 years ago

If the drag line is what matters/is what will be used to enforce, isn’t there an opportunity for some real shenanigans here?

He’s resetting a couple feet off the rubber, but I bet with practice a person could drag reset 4 or 5 feet up.

phoenix2042Member since 2016
9 years ago

Or just keep hopping forward while dragging feet. It only specified one leg that can’t be planted… So plant the other and keep dragging all the way to the plate!

johansantana17Member since 2026
9 years ago
Reply to  Jeff Sullivan

As outlandish as they seem, these are real criticisms of the new rule clarification. It really does not clarify much at all.

soddingjunkmailMember since 2016
9 years ago
Reply to  johansantana17

It’s perfectly clear. The problem is that they didn’t enforce it last time. There’s no clarification they could possibly make that would make what they said legal before(in error) illegal now.

TrevorCap
9 years ago

“He’s good without being too good…”
I would strongly disagree with this. In 2015 his swing strike rate was 25.4%. The difference between him at #1 and #2 Aroldis Chapman at 19.3%, (who is the hardest throwing human who has ever existed so far) was the same as the difference between #2 Aroldis Chapman and #55 Ryan Madson. I have no doubts that Carter Capps could be a successful reliever without that delivery, because he still throws 98 mph but Kelvin Herrera throws identical heat and only runs a 15.2 % SwStr and a 22% K-Rate. Carter Capps could possibly be a top 10 reliever without that delivery but the last time he took the mound he was the best reliever in baseball and it was because of that delivery that is violating (at the very least) the spirit of the rule, even if it isn’t against the literal printed rule.

John Autin
9 years ago
Reply to  TrevorCap

I second your strong disagreement. When a guy logs the 3rd-highest SO% ever, using a delivery that looks illegal to most disinterested people, that’s not good for baseball.

TKDCMember since 2016
9 years ago

It seems like the first or third base umpire (the one that is not looking for swing/no swing) could be in charge of making sure the back foot maintains a drag line. If they are looking for it, they should be able to tell if his foot leaves the ground, even for a small fraction of a second.

But he is obviously replanting. His arm action does not even begin until his back foot lands. Seems to me that if you “throwing from the rubber,” you should begin the process of throwing the ball while you are on the rubber.

Famous Mortimer
9 years ago
Reply to  TKDC

Completely agree. His old action was a bit of a joke. I think things need to swing back to the batters a little, and if forcing pitchers to actually pitch off the rubber is how you do it, then do it.

victorvran
9 years ago

What does plant/replant mean then? To me, I’d describe what his back foot does after his “drag” as replanting. His back foot hops or drags or whatever and then sets down again before his front foot does and it looks like he is then pushing off that back foot.

Edit: and TKDC said pretty much the same thing which I couldn’t see before posting, so my bad on what’s pretty much a double comment.

Sean HuffMember since 2020
9 years ago

I love Carter Capps so much. My first article was about him. If fully healthy he will be the best reliever in baseball. The delivery seems legal enough as well.

moepvc04
9 years ago

Personally I’m rooting for Capps to succeed and become the real-life Happy Gilmore of baseball. All of the kids are going to try to copy him. Baseball can always use a little more fun. Is there a way that Capps can patent his delivery so he can make a little coin off of future marketing?

johansantana17Member since 2026
9 years ago

I don’t think MLB went far enough. The delivery in the Marlins video is clearly a rule violation. The pitcher should be required to keep his back foot in contact with the pitching rubber until he releases the ball.

WAR Hero
9 years ago
Reply to  johansantana17

Pretty much no pitcher does that though. If you have ever pitched, by the time the ball comes out of your hand, your entire body is moving forward, and your back foot has dragged off the rubber at least a couple inches, normally more.

Pinstripe Wizard
9 years ago
Reply to  WAR Hero

This. We’re talking about apples and oranges here with Capps and the standard delivery, but it’s very difficult to maintain contact with the rubber all the way through your delivery.

mr.met89Member since 2024
9 years ago

I feel like his delivery puts an insane amount of stress on his arm, so his first TJ was no surprise. He could need another before long, so maybe he doesn’t last in the league for many more years?

Pinstripe Wizard
9 years ago
Reply to  mr.met89

Not that Capps had no chance at being a major leaguer before the motion change and he’s not a great example of my argument, but if you’re a fringe guy, it might be worth blowing your arm out a couple of times to get MLB salaries for 4-5 years when otherwise you’re working for peanuts in the minors.