San Diego Chargers quarterback Philip Rivers has revealed that the injury suffered by wide receiver Malcom Floyd "didn't look good".

Floyd suffered a strained knee in a collision with cornerback Shareece Wright during training on Monday, with teammates reportedly fearing that he had suffered a torn ACL.

Coach Mike McCoy remained coy on how long Floyd would be on the sidelines for having already lost receiver Danario Alexander to a season-ending ACL tear, and Rivers is hoping that this latest injury does not turn out to be as bad as it looked.

"You hate it happening to anybody, obviously, but Malcom, there's not much better than him on and off the field," Malcom told The AP.

"Obviously we don't know the extent of the injury. It didn't look good. There's been a lot that didn't look bad and ended up real bad and some that looked real bad and ended up OK. We'll just hope for the best."

Depending on the severity of the injury, Floyd could miss his side's opening match of the season against the Houston Texans on September 9.