Clemson DE Xavier Thomas sitting out after foot flare-up, sources say 5:28 PM ET Adam RittenbergESPN Senior Writer Close College football reporter. Joined ESPN.com in 2008. Graduate of Northwestern University. SOUTH BEND, Ind. -- Clemson will be without defensive end Xavier Thomas for Saturday night's game against Notre Dame , sources told ESPN. Thomas' foot injury flared up after he appeared in the past three games for No. 4 Clemson, recording two sacks, four tackles and a forced fumble. He suffered the injury during preseason camp, underwent surgery and missed Clemson's first five games. K.J. Henry , who has started Clemson's first eight games but has shared time with Thomas lately, is expected to take on a bigger role against the Irish. Justin Mascoll and Kevin Swint also likely will see increased snaps alongside starter Myles Murphy . A fifth-year senior, Thomas has made 19 career starts and appeared in 49 games for Clemson, recording 14.5 sacks, 30 tackles for loss and five forced fumbles.