Oswalt versus Carpenter highlights schedule
Monday and Tuesday featured a healthy share of teams' fourth and fifth starters, and because Wednesday represents the sixth games of many teams' second halves, a number of aces will return to the hill for start No. 2 since the All-Star break. Two of them will square off in a battle of National League Central foes, as the Cardinals' Chris Carpenter and Astros' Roy Oswalt are set to tangle in Houston.
Not every team will throw an ace, though. Two pitchers will make their first starts ...
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