MIAMI -- Back spasms forced New York Yankees pitcher David Wells from his start in Game 5 of the World Series after only one inning Thursday night.
Wells, who is 10-3 lifetime in the postseason, retired the Florida Marlins in order in the first inning, but Jose Contreras began warming up in the New York bullpen during the top of the second and David Dellucci pinch hit for Wells.
Dellucci grounded out, ending the inning, and Contreras came on in place of Wells, the losing pitcher in Game 1 last Saturday.
Tied at two games each, the Yankees already had a depleted lineup when Wells walked off the mound with a pained expression. An examination in the clubhouse showed he had acute lower back spasms caused by a recurring disc problem.
New York was without All-Stars Alfonso Soriano and Jason Giambi in the starting lineup.
Manager Joe Torre benched the slumping Soriano in favor of Enrique Wilson at second base, and removed Giambi from the lineup during batting practice because he was hobbling on a sore left knee. Nick Johnson started at first base for Giambi.
The hefty Wells has been bothered by back problems for years. He had surgery in 2001, missed a start in August this season and received an epidural painkilling shot.
Pitching coach Mel Stottlemyre also criticized Wells' work habits this year, saying the 40-year-old left-hander wasn't throwing enough between starts.
Wells appeared to grimace on the mound after Luis Castillo's groundout for the second out of the first inning. His departure sent Yankees general manager Brian Cashman scurrying up an aisle in the stands for some information, no doubt.
It was the shortest outing by a starting pitcher in the World Series since San Diego's Mark Thurmond got only one out against the Detroit Tigers in Game 5 in 1984. And it could be Wells' last appearance in the majors - the Yankees hold an option on his contract for next season.
Wells was 15-7 with a 4.14 ERA this year. He earned his 200th career win on the final day of the regular season, beating Baltimore 3-1.
Contreras, who threw two scoreless innings in Game 4 on Wednesday night, didn't have much time to warm up. He retired his first two batters, then began to struggle.
He walked two hitters in a row, and yelled "Look out!" as his pitch sailed toward Derrek Lee's head for ball four. Alex Gonzalez followed with an RBI double to deep right-center, and pitcher Brad Penny hit a two-run single to give Florida a 3-1 lead.
Contreras gave up a two-out RBI double to Juan Pierre in the fourth, making it 4-1.
The right-hander was lifted for a pinch hitter in the top of the fifth. He allowed four runs and five hits in three innings.