Leverage & Tony LaRussa

While I was thinking about looking at this I wasn't sure whether the (relative) fungibility of relief pitching made it more likely to reveal a manager's innermost thoughts and desires—i.e. he can use anybody, and there are lots of candidates for the role, so he can lean toward his older pitchers if he wants—or less, that they were so difficult to predict that when one reliever does well he's as good as any other, age be damned.

Viva El Birdos