The Post-Gazette reports that Adam LaRoche has hit the DL with some sort of torso problem, so Brian Bixler will take his spot on the roster. Doug Mientkiewicz stands to inherit a good chunk of playing time as a result of LaRoche's absence. Let's hope LaRoche isn't out too long--he seems to take months finding his stroke at the beginning of the season, and if he sits out three weeks or something, I'm afraid he may lose it again.
Anyway, Bixler isn't a better bet to succeed now than he was at the beginning of the season, but he shouldn't receive as much playing time now, assuming Freddy Sanchez can come back at full strength.