Mopping Up in 2009

Last season, Eric Seidman set out on a quest to find the most extreme mop-up men. Eric has since moved on, but if I may, I would like to keep the tradition of honoring those ill-forsaken heroes by following the same methodology laid out in this post. To quote the most important part:

The LI component, for those unaware, is Leverage Index, developed by the aforementioned TangoTiger. The stat essentially measures the stress level of the situation at hand. An average LI is 1.00, so when dealing with supposed mop up pitchers, of interest are the average LIs for pitchers equal to, or below, the average. Plugging it into the above formula, dividing by innings pitched, and multiplying that quotient by the total number of games pitched should, in theory, help us narrow these mop up guys down. Basically, the lower the number provided by that formula, the more mop-uppy the pitcher.

Pretty straight-forward, no? The bar for qualification was set at 40 innings, which just so happened to give a nice selection of relievers – 176 to be exact – for which we can answer of whom was the most janitorial and of whom was the most executive – or whatever the opposite of the pitching equivalent of a janitor is. The answer to the former question is actually well-known – or at least should be by now. Most of the die-hard readers know more about Luis Perdomo than they should thanks to my obsession with him. His “MOP” score came out to a minuscule 0.163. Only one other pitcher finished within 0.1 points of Perdomo, and that was Josh Fogg at 0.174. The top 10 breaks down as such:

Luis Perdomo Padres	0.163
Josh Fogg Rockies	0.174
Chris Smith Brewers	0.266
R.A. Dickey Twins	0.293
D.J. Carrasco White Sox	0.307
Matt Palmer Angels	0.323
Leo Rosales Diamondbacks	0.344
Carlos Fisher Reds	0.344
Mark Hendrickson Orioles	0.405
Brian Bass Orioles	0.418

Carrasco is the best of the bunch (as judged by FIP) and as such, dethrones Buddy Carlyle as mop-up man of the year.

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3 Responses to “Mopping Up in 2009”

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  1. Logan says:

    Fun article. Useless info, but kinda neat. God I love this site.

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  2. scott says:

    Does this consider when they come into the game? Is there a site that shows what innings a pitcher pitched in most? As someone who saw a lot of White Sox games this year and based strictly on memory, there were a lot of games where, yes, Carrasco came in for mop-up duty, but rarely would Ozzie use him for mop up late in a game; “I feel” like a lot of the mop-up duty Carrasco was inserted in was when White Sox starters got blown up early. This happened quite a few times that I can remember in Jose Contreras, Carlos Torres, Bartolo Colon, and (a) John Danks starts.

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  3. B says:

    Makes sense that Perdomo would be at or near the top in that category. He was a rule 5 guy and they probably didn’t feel he was really ready for the bigs, but wanted to hang on to him for the future, so they basically stashed him away on the 25-man and only gave him PT in the most mop-up situations possible.

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