San Diego Chargers wide receiver Malcom Floyd left Sunday night's preseason game against the Dallas Cowboys with a concussion.

Midway through the second quarter, Floyd caught an 18-yard pass over the middle from Billy Volek. Cowboys safety Gerald Sensabaugh brought down Floyd, who hit his head on the ground.

The 6-foot-2, lanky wideout caught 37 passes for 717 yards and six touchdowns in 11 games for San Diego last season.