United States' Weston McKennie only has bruised, not sprained, left knee

United States midfielder Weston McKennie has a bruised left knee, not a sprain as was first announced.

McKennie left the Americans' 1-0 friendly win over Mexico on Tuesday night in the 40th minute after injuring the knee and was replaced by Julian Green.

The U.S. Soccer Federation originally called the injury a sprain, but said Wednesday he was re-evaluated and has a bruise and no sprain.

McKennie, who also played 83 minutes against Brazil on Friday, is among the U.S.'s more promising young players. The 20-year-old is a regular starter for Schalke in the Bundesliga.

McKennie returned to Schalke on Wednesday for additional treatment, according to the USSF, which did not have a timetable for his return.