USC linebacker Jabari Ruffin will miss the 2014 season after tearing a ligament in his knee during practice, the team announced Sunday.
Ruffin sustained the injury when he was tackled during an interception return.
A redshirt sophomore, Ruffin played in 13 games last season, including one start, recording 22 tackles, a sack and a forced fumble.
Ruffin was in position to start at outside linebacker before the injury. In his absence, J.R. Tavai, Scott Felix and Quinton Powell will compete for playing time.
USC has lost two other players for 2014 recently. Junior tight end Jalen Cope-Fitzgerald was ruled academically ineligible last week, and defensive lineman Kenny Bigelow tore his ACL in July.
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