CARSON, Calif. — Los Angeles standout Landon Donovan limped off with a left-knee injury with about 10 minutes left in the Galaxy's 2-1 Major League Soccer loss to Real Salt Lake on Saturday.

The injury creates doubt whether Donovan will be available for the United States' World Cup qualifiers at Antigua & Barbuda on Friday and against visiting Guatemala on Oct. 16.

The extent of the damage wasn't known.

"We have to get it worked out. ... It didn't feel good," Donovan said.

The 30-year-old midfielder missed last month's qualifiers against Jamaica because of a hamstring injury.

Other MLS matches

Earthquakes 4, at Rapids 1

Chris Wondolowski contributed three goals and an assist to lead San Jose past Colorado. The Earthquakes clinched the West title.

Fire 2, at Red Bulls 0

Sherjill MacDonald scored two second-half goals as Chicago beat New York.

D.C. United 1, at Toronto 0

Hamdi Salihi scored in the 88th minute to give D.C. United a victory over Toronto FC.

Impact 1, at Dynamo 1

Sanna Nyassi scored in the 66th minute to give Montreal a draw with Houston. Will Bruin scored for the Dynamo.

At Union 1, Revolution 0

Jack McInerney converted a header off a free kick in the 73rd minute, lifting Philadelphia to victory over New England.

Note

• Bolton player Marvin Sordell wrote on Twitter that he and several teammates were subject to racist abuse by Millwall fans during a second-tier match in England. The Football Association is investigating.