CHRIS CARPENTER

RH • (11-3, 3.09)

The Cardinals are 13-1 in games started by their ace against the Pirates. The righty has a 2.29 ERA in 14 starts against Pittsburgh. Carpenter is third in the NL in innings pitched through Wednesday's games, with 148 2/3 innings.

JEFF KARSTENS

RH • (2-6, 4.72)

The Pirates' righty has lost four consecutive decisions. His team has backed him with a total of seven runs in those four losses. Karstens' only scoreless appearance of the season was the six innings he worked against the Cardinals for a win May 8.