HAWTHORN defender Campbell Brown has been forced from the ground in the match against the Sydney Swans with a knee injury.
Initial reports suggest Brown has injured his posterior cruciate ligament, which could mean four to six weeks on the sidelines.
Brown injured the knee in a clash with the Swans Ryan O'Keefe with ten minutes to go in the third quarter and hobbled off to the bench.
Midway through the fourth quarter the Hawks lead the Swans 8.16 (64) to 7.9 (51).