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The Cardinals rotation currently ranks 23rd in the majors in quality starts.
Chris Carpenter has been the unquestioned ace of the rotation, leading the Cardinals in both innings pitched and strikeouts. Carpenter has not been as dominant as in years past, but there has been no doubt about his intensity and determination to compete when he takes the mound.
As for the other guys?
Kyle Lohse has made it out of the seventh inning only once since the month of June. He threw a season low three innings against Florida on August 4.
Jaime Garcia has not pitched more than five innings in the month of August. He has become completely ineffective on the road, with a .320 batting average against and an ERA (4.71) more than double what it is at home (2.06).
Jake Westbrook has been a season-long mystery. He started the year as a complete disaster but has seen his ERA drop as the season has continued. However, there is no predicting which Westbrook will pitch: the one who gave up four hits in eight innings on July 21 or the one who gave up two home runs in 5.2 in his last appearance.
Edwin Jackson has been unremarkable for the Cardinals, except in his willingness to truly take one for the team.
Now that the bullpen has almost managed to right itself (except for Arthur Rhodes, who seems worse than a left-handed Miguel Bautista), the starters owe it to their team to pitch much better.