Ingram suffered the knee injury during workouts on Tuesday. He will receive other opinions on the injury, according to Michael Gehlken of U-T San Diego, but a torn ACL is reportedly a possibility. If a torn ACL is confirmed, the injury would be a big blow to the Chargers' defense in the coming season. Ingram worked his way into the lineup last year, but was expected to be a significant contributor and possible starter this season.
The 2012 first-round pick started two games last season, finishing the campaign with 41 tackles and a sack. He was penciled into one of the starting linebacker spots this season as San Diego remakes its defense. Ingram will undergo further tests to confirm the severity of the injury.
Contact is not permitted during NFL OTAs but Ingram wouldn't be the first player to suffer an injury without being in a contact drill. Seattle defensive lineman Greg Scruggs tore his ACL last month when he tripped on a pad while going through a drill.