When You Should Ignore the Data
When Jim Leyland was setting his lineup for Game 3 of the ALDS, he looked to data for guidance. What he found was that Ramon Santiago was 7-for-24 in his career against CC Sabathia, giving him a .292 average against the Yankees ace. How much that played into his decision to hit Santiago second, we can’t say for sure, but he did mention this fact to reporters before the game and he did hit Santiago second last night. It’s probably safe to assume that Santiago’s history against Sabathia played some role in his placement in the lineup.
When Ken Rosenthal reported this on Twitter, I threw out a response about batter/pitcher match-up data in general, saying “Specific batter vs pitcher data is probably the worst use of statistics in the entire sport.”
A lot of people took umbrage at this comment, and when Ramon Santiago proceeded to go 2-for-3 off Sabathia — including a double that momentarily gave the Tigers the lead — many were happy to point out that Leyland’s move to insert Santiago worked, and thus, his decision to look to batter/pitcher match-up data was justified. There are quite a few problems with this scenario, however.