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April 1, 2014

Baseball Therapy

The Complete Value of a Complete Game

by Russell A. Carleton


The complete game has become an increasingly rare beast. In 2013, there were 124 complete games registered by the 4,862 pitchers who started out on the hill, and Adam Wainwright led all of baseball with five. If a pitcher makes it through nine innings, he’s likely having a very good day, and nine innings of well-pitched baseball is nothing to sneeze at. But a complete game is more than that. It’s a sign of manliness. It’s like shouting, “I don’t need no stinkin’ bullpen!” It’s a cultural touchstone. It’s the guy yelling at his TV, “Finish what you started, you silly overpaid, coddled millionaire. I finish my day of work without calling in a reliever.” A pitcher who completes a game is just getting in touch with the common man.

There’s a certain fascination surrounding the pitcher who goes deep into games, even if he doesn’t complete them. It’s been argued that such a player provides value well beyond the confines of the game in which he pitches. Logically, the argument makes sense. Coin Wyers pointed out that the deeper into a game a pitcher goes, the better the bullpen performs. Mostly, that has to do with the fact that if a manager can get through the seventh with his starter, he can tell his third- and fourth-best relievers to take the night off. In some bullpens, the last thing you want is that fourth-best reliever throwing any pitches. Others have suggested that if a manager has a starter on whom he can count to go deep into a game, it affects his choices on how to work the bullpen the day before (he doesn’t have to “save” as many arms for the next day) and after (all of the relievers are rested). In that way, the complete game affects three different games!

And then someone says it. “How do you really figure out the full value of the complete game? I mean, there’s the game itself, but there’s all that value that he’s adding in the game on either side, and that’s not being captured in the stats. There’s just no way to fully value that.”

I do believe that was the sound of a gauntlet being thrown down.

Warning! Gory Mathematical Details Ahead!
To solve this problem I decided to create the perfect pitcher. He is so good that his manager knows that on his day, no one in the bullpen will need to lift a finger. They might as well not be at the ballpark. It’s 100 percent guaranteed. On the day before his scheduled start, the manager can use the bullpen to his heart’s content. On the day after, he’ll have a rested pen.

The funny thing is that this pitcher already exists, and no one gives him any credit. Ladies and gentlemen, I give you the perfect bullpen saver: Scheduled Offday.

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Related Content:  Pitching,  Complete Games

14 comments have been left for this article. (Click to hide comments)

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dREaDS Fan

Love the approach - using the offday as a simpler proxy for complete games. That's the kind of seeing-beyond-the-obvious problem structuring (& then backing it up with the analytics) that keeps me subscribing.

Apr 01, 2014 05:40 AM
rating: 4
 
bhalpern

I wonder if the difference in reliever usage would be more or less significant when analyzing samples of two consecutive days played before a day off versus similar groups of games not preceding a day off. Also, since we're now in an era where it's already fairly normal to use a reliever for two or less batters almost daily maybe excluding the relatively recent era of this type of reliever usage might show there was a more significant day-off effect in the past.

Apr 01, 2014 07:27 AM
rating: 0
 
oldbopper

When I read "I don't need no stinkin' bullpen" the Mets instantly came to mind. Is at possible to believe that Jose Valverde is the best they have?

Apr 01, 2014 07:43 AM
rating: 0
 
kingstriker03

I know there are pitchers that statistically become more dominant later in games, but I have to assume they're few and far between. Based on the fact that your study seems to show that the advantage of a SP throwing a CG is minimal, it seems likely that a team actually has a statistical advantage in pulling a SP late in the game in favor of a dominant setup guy or closer...regardless of how well the SP is throwing. The odds of that SP breaking down and making a bad pitch due to exhaustion might be higher than a fresh closer coming in to finish off the game. Of all of the CG's thrown in your study, I'd be curious to see the breakdown of what the run differential was entering the 9th inning.

Apr 01, 2014 07:52 AM
rating: 0
 
gjhardy

Very interesting. Since a manager can never assume the SP's performance in tomorrow's game, almost all the value of the CG is tied to the game after the complete game, right? But your chart shows that although more RP's are apparently available to pitch, they don't pitch as well, with 4.43 RA vs. 4.39. Isn't that actually a negative effect?

There might be some unexpected noise in here too: Some managers might, on occasion, use an off-day to skip a fourth or fifth starter's turn in the rotation, or to juggle the rotation a bit for matchup purposes.

Apr 01, 2014 08:53 AM
rating: 0
 
BP staff member Russell A. Carleton
BP staff

That should actually be reversed. 4.39 after a day off, 4.43 with no day off. It's a very small effect.

Apr 01, 2014 10:11 AM
 
BP staff member Ben Lindbergh
BP staff

Fixed.

Apr 01, 2014 10:16 AM
 
rweiler

If any team was lucky enough to have a rotation full of guys that could pitch complete games on a fairly regular basis, they could get by with fewer relief pitchers and thus be able to add an extra bat or two to come off the bench. That might add a win per year. Of course any team that had 5 guys pitching a lot of complete games would probably be winning most of them anyway.

Apr 01, 2014 09:51 AM
rating: 1
 
DetroitDale

Two excellent points, which dovetail with some ideas, I've had. The evolution away from the complete game and towards highly specialized bullpens has resulted in 12-13 roster spots to pitchers where previously 9-10 was sufficient. This results in a much shorter bench, usually a backup catcher, a 4th outfielder and a guy who can play every position but can't hit a lick. For this reason, I've been advocating expanding the roster to somewhere between 28-30 players.

Apr 01, 2014 13:37 PM
rating: -2
 
DetroitDale

Excellent analysis. Surely a bullpen would benefit from a day off (though not as much as we thought by this analysis) but not every team has a Justin Verlander who can give them one. For those teams, I have an alternate suggestion, the 6th starting pitcher. Every team usually has two guys fighting for the fifth spot on the roster and one ends up either converted to a reliever or sent to AAA. I say, keep the odd man out, but run out there every fifth day, the same day as the guy who beat him for the fifth starting spot. One guy pitches innings 1-5, the other 6-9. Each guy only faces the hitters about twice, avoiding the third trip through the order that really causes problems, you can rest the other pitchers that day, and you can save your closer and setup guys for the other days without giving any innings to those middle relief guys that REALLY make you cringe.

Apr 01, 2014 13:49 PM
rating: -1
 
garthhewitt

I believe the perceived greatest value of a CG is the "stopper" value. Ie the effect is most appreciated when the bullpen has been stretched due to poor starts prior to the complete game. The testable hypothesis is something like: When a complete game follows multiple short starts, the team ERA is better in the next four games than in the preceding four games. If there is a stopper value, it may be hidden in the statistical noise when compared to overall averages.

Apr 01, 2014 15:24 PM
rating: 0
 
alangreene

So is there really no real value on other games, or are managers not taking advantage of something they should?

At minimum, it seems like they may be wasting off days.

Apr 01, 2014 21:04 PM
rating: 0
 
gjhardy

I would hate to see MLB expand rosters. Managers and Front Offices should be forced to make some decisions on who to keep on the active roster; with 28-30 players, we would be looking at more relief pitchers, more platoons, etc. The All-Star Game is pretty much unwatchable; I would not like to move in that direction at all.

I think a smart FO would try to find some kind of efficiency with the fifth starter position. I would love to see the numbers for the "average" fifth starter last year. Assuming this guy -- or this collection of guys -- starts 30 games in a season, I suspect that teams are essentially handcuffing themselves in something like 10% of their games by trotting out a really marginal guy in that slot.

That's fine if you are not a contender; you can use the fifth slot to develop a young guy. But if you are in contention in September, you might regret giving away multiple starts in April-May to a guy who you already knew was not good.

Apr 02, 2014 08:09 AM
rating: 1
 
BP staff member Harry Pavlidis
BP staff

"Maybe it does make the manager feel better about life, but you can’t put happy feelings on the scoreboard." Not for long. FEELSf/x is coming soon, and it will be made available to the scoreboard operators.

Apr 02, 2014 09:48 AM
 
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