Chicago bullpens
Sal Baxamusa of The Hardball Times did an interesting piece called “How are closers being leveraged?”
In it, Baxamusa took a look at the leverage index (LI) of bullpens in baseball. Basically, LI is a measure of how critical a certain situation is. Essentially, he’s exploring the ways managers use their bullpens and how often the relievers enter “critical” (game-changing) situations.
What he found was that the White Sox and Cubs have the highest LI in all of baseball. In other words, as Baxamusa said, “Chicago fans of both persuasions are being treated to exciting games this year, even if they don’t always come out on the winning end.”
Baxamusa also took a look at specific pitchers who enter the games in situations that are most critical. What I found interesting is that five out of the top six pitchers on the list are closers. Trevor Hoffman is No. 1, with a gLI (gLI is merely the leverage index of a situation the reliever inherits) of 2.34. The higher the LI is over 1, the more critical of a situation the pitcher is inheriting. Matt Thornton of the White Sox is No. 2, followed by Joakim Soria, Salomon Torres, Huston Street and Todd Jones.
Thornton, of course, is the only non-closer in the top six. How do we interpret this? As I said, the White Sox lead the league in high-leverage situations, so his appearance might just indicate that Ozzie Guillen looks to him when the outcome of the game hangs in the balance.
So far, it isn’t working out. Thornton’s ERA is 5.40, despite pitching six straight scoreless appearances. It’s possible, of course, that Thornton is simply the only lefty that Guillen trusts to come in. Andrew Sisco and Boone Logan are Guillen’s other lefty options, and neither one is particularly compelling.
There are other possibilities as to why the White Sox have a middle reliever in the mix of pitchers with the highest gLI. Perhaps Guillen is leaving his starters in too long and then needs a middle reliever to clean it up. Or maybe Guillen is just plain misusing his bullpen. Any thoughts on this, readers?
The Cubs, who have the second highest LI in baseball, have no individual pitcher in the top 10. That’s a little strange, but it seems to me that it may actually be a good thing. It may indicate that Lou Piniella isn’t putting the toughest situations on one pitcher’s lap and is playing more to the situation.
I’d be curious to know why you might think this is so, as well.
Just, out.


