D.C. United rookie midfielder Lance Rozeboom will miss several months after tearing the anterior cruciate ligament in his left knee during a practice session this week in California.

Rozeboom, a supplementral draft pick from the University of New Mexico, earned one of the final roster slots with quality play in central midfield during training camp. After suffering the injury, he returned to Washington for evaluation. The club announced the test results Friday. A specific timetable for recovery won’t be available until after he undergoes surgery April 5. However, an ACL injury typically sidelines a player for six to nine months.

Rozeboom didn’t appear in either of the first two MLS matches but was included on the 18-man game-day roster for the 3-1 loss to the Los Angeles Galaxy on Sunday at Home Depot Center — a promising step for a young player.

United’s injury also includes reserve midfielder Kurt Morsink (foot) and defender Ethan White (knee), who are recovering from surgery, and defender Dejan Jakovic, who is questionable for Saturday night’s match at Vancouver with a groin strain (10 p.m. ET, Comcast SportsNet/DC, Direct Kick, MLS Live).

United is without three players on Olympic qualifying duty: U.S. goalkeeper Bill Hamid and midfielder Perry Kitchen, and Honduras midfielder Andy Najar.