Martinez, who is 0-3 with a 4.76 ERA over his first four starts, is at a loss as to the source of his problems thus far this season, Derrick Goold of the St. Louis Post-Dispatch reports. "I'm not really sure what's going on," he said. "I'm just trying to find my rhythm and get the mechanics down right. It's just trying to locate that fastball."
Carpenter is one of the players manager Mike Matheny is considering for occasional starts at third base in the wake of Jhonny Peralta (upper respiratory illness) heading to the disabled list, Rick Hummel of the St. Louis Post-Dispatch reports. "We're not ruling that out as an option," said Matheny.
Diaz, who endured an 0-for-18 slump before a pinch-hit infield single Wednesday, studied film of his at-bats from last season and reevaluated his mental approach earlier that day, Ben Frederickson of the St. Louis Post-Dispatch reports. "I think a day off helped a lot," Diaz said. "I reset my mind. I came in early, watched a lot of video from the last year. I just feel good. I have confidence it's going to be better in the next couple of games. You have to trust the process, and keep working."