Yesterday, the Rangers announced that Neftali Feliz would serve as their closer again in 2011. As is the case when almost any talented young pitcher is shifted from the rotation to the bullpen, the reaction from the stathead community was fairly loud and mostly negative. After all, the superior value of a starting pitcher is a pillar of sabermetric orthodoxy, and using a guy who could start in relief is almost universally viewed as a waste of potential. In general, I agree with this principle. In this specific instance, though, I don’t think there’s really much to be upset about, as I don’t think there’s a significant gap in expected value from Feliz in 2011 regardless of what role they chose to use him in.
Let’s start with the main point of contention – the quantity of innings that Feliz will throw as closer compared to the amount he could have thrown as a starter. Last year, Feliz tossed 69 1/3 innings out of the bullpen, and only a few closers managed higher totals. In most years, even the healthiest ninth inning specialists will only manage about 70 innings per season. If the Rangers use him aggressively and are in a lot of close games, he could push towards 80 innings, but that’s probably the ceiling and shouldn’t be the expected result.
As a starter (assuming he stayed healthy), he’d throw a lot more than 80 innings. The question, though, is how many more? Feliz’s career high in innings pitched in a season is 125 1/3, back in 2008 when he split the season between A-ball and Double-A. He faced 509 batters that season, or about 60 percent of what a full-time Major League starter would face over the course of a season. He’s since faced even fewer batters in the subsequent two seasons, and realistically, it would be unwise of the Rangers to ask a 22-year-old to make a substantial leap in workload this year. Even as a starter, they couldn’t have asked him to make 30+ starts and then still be able to take the ball in October, had they achieved their goals and made the playoffs again. At that point, they’d be doubling his career high workload, and getting close to tripling what he did in 2010.
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