Houston midfielder Geoff Cameron out for season

Houston Dynamo midfielder Geoff Cameron will need surgery to repair a torn posterior cruciate ligament in his right knee and will miss the rest of the Major League Soccer season.

Cameron was injured in Saturday's 2-0 loss to Chicago, and the Dynamo announced the diagnosis Monday.

The 24-year-old was a member of the MLS Bext XI as a defender last year and shifted to midfield this season. He made his U.S. national team debut against El Salvador on Feb. 24 as an 86th-minute substitute.

Houston already was missing forward Brian Ching, who injured a hamstring in the season opener. The Dynamo midfield was weakened during the offseason when Stuart Holden left to sign with Bolton and Ricardo Clark to sign with Eintracht Frankfurt.