TAMPA, Fla. (AP) _ Harut Karapetyan's goal 14 minutes into the second half kept Los Angeles unbeaten as the Western Conference-leading Galaxy earned a 2-1 victory Saturday night over Tampa Bay, the top team in the Eastern Conference.

Karapetyan's goal, his third in two games, came off a pass from Mauricio Cienfuegos for Los Angeles (8-0). Karapetyan banged the shot from eight yards out into the top of the net in the 59th minute in front of 19,717.

World Cup qualifying matches Sunday forced both teams to change their offense and field substitutes for key players.

Guillermo Jara stepped in for the Galaxy's leading scorer Eduardo Hurtado, who was recalled for Ecuador's game against Argentina, and gave the Galaxy a 1-0 lead in the 30th minute.

Goran Hunjak started for Mutiny (6-3) assist leader Carlos Valderrama, who was called to captain his Colombian team against Peru.

Hunjak apparently scored in the 12th minute, but the goal was called back for an offside. Two minutes later, he cracked another shot off the Galaxy post.

Tampa Bay made it 1-1 in the 35th minute on Roy Lassiter's 23-yard shot that slipped past the outstretched arms of Galaxy goalkeeper Jorge Campos and just inside the post.

``We didn't allow L.A. their game in the first half at all. We got about four or five good chances but couldn't capitalize on them,'' Tampa Bay coach Thomas Rongen said. ``Finishing has to do with the final pass and the final pass was poor.''