New York Yankees relief pitcher Damaso Marte sits in the dugout after giving up a walkoff grand slam to Texas' Marlon Byrd Monday in the Rangers' 9-5 win.

Joba Chamberlain went down with a stiff shoulder during a tight pennant race. On a tough night in Texas for the New York Yankees, the latest injury to their pitching staff really hurt.

After the hard-throwing Chamberlain came out in the fifth inning, the Yankees lost 9-5 to the Rangers on Marlon Byrd's game-ending grand slam off former Pittsburgh Pirate Damaso Marte with two outs in the ninth.

Chamberlain was slated to return to New York today and probably will miss a turn in the rotation. Anything more than that would be a major blow to the depleted Yankees, who are 2Z\x games behind Boston for the AL wild-card lead.

On a 101-degree night, Marte (0-1) walked three batters in the ninth before Byrd hit a shot into the center-field seats for his fifth career slam and second this season.

New York tied it in the eighth on Xavier Nady's fourth homer in 30 at-bats since joining the team July 26.

Indians 5, Rays 2

At St. Petersburg, Fla., Cliff Lee (15-2) pitched seven innings to tie for the major league lead in wins and Cleveland improved to 5-0 against Tampa Bay this season.

Royals 4, Red Sox 3

At Kansas City, Mo., Gil Meche won his fourth straight start and Alex Gordon homered to help the surging Royals hold off Boston.

Mariners 11, Twins 6

At Seattle, Raul Ibanez had a grand slam and six RBI — all in a 10-run seventh inning — and the Mariners staged their biggest comeback of a lost season to stun Minnesota.

Angels 6, Orioles 5

At Anaheim, Calif., Chone Figgins drew a bases-loaded walk from All-Star closer George Sherrill (3-5) with two outs in the ninth and the Angels regrouped after Francisco Rodriguez (1-2) blew a four-run lead.

Blue Jays 6, Athletics 1

At Toronto, Roy Halladay (13-8) pitched eight strong innings of four-hit ball to hand Oakland its season-high seventh straight loss.