One of the stats that they track over at The Hardball Times is LOB% for pitchers. This is the percentage of baserunners allowed that didn’t score a run. Here’s this stat for certain Yankees this season:
I thought it was interesting that Mussina and Wright have the same LOB% – and their ERAs are not close. (Wright is almost a run higher.)
This could be something to consider when it comes time to look at bringing Mussina back in 2007.