The Yankees close out their series with Toronto, the Cards take on the Reds, and Pedro Martinez debuts for the Phillies.

Colliding in the Junior Circuit . . .

A.J. Burnett (10-5, 3.67 ERA) will take the hill for the Yankees on Wednesday afternoon as they complete a home series against the Blue Jays and Ricky Romero (10-5, 3.66 ERA). Righthander Burnett dominated the Red Sox in his last trip to the mound, holding the rival club scoreless on one hit over his 7 2-3 innings of work. Lefthander Romero was beaten by the Orioles in his last start, surrendering four earned runs on five hits over his six innings pitched that night.

Also on the American League schedule for Wednesday: Oakland at Baltimore, Tampa Bay at the Angels, Texas at Cleveland, Detroit at Boston, Kansas City at Minnesota, and the White Sox at Seattle. Mark Buehrle (11-6, 3.89 ERA) will try to snap his three-game losing streak for the ChiSox; the lefthander hasn’t won since pitching his perfect game on July 23. The M’s counter with righthander Felix Hernandez (12-4, 2.84 ERA), with Seattle a stellar 9-1 in his last 10 outings.

Clashing in the Senior Circuit . . .

The Phillies will send Pedro Martinez (0-0, 0.00 ERA) to the mound on Wednesday as the righthander makes his season debut on the road against the Cubs and Jeff Samardzija (1-1, 6.29 ERA). Martinez had been pitching in the minor leagues in recent weeks; Jamie Moyer was sent to the bullpen to make room for him in the rotation. Righthander Samardzija has appeared in 16 games so far this season for the Cubs, all in relief; he replaces injured Carlos Zambrano.

Rounding out the National League slate for Wednesday: the Mets at Arizona, the Dodgers at San Francisco, Houston at Florida, Washington at Atlanta, San Diego at Milwaukee, Pittsburgh at Colorado, and Cincinnati at St. Louis. The Reds will send Homer Bailey (2-3, 7.11 ERA) to the hill in that matchup; the righthander has allowed 10 earned runs over his last 11 1-3 innings. Chris Carpenter (11-3, 2.26 ERA) is set for the Cardinals; the righthander has won his last three outings.

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