Austin Dillon aggravated an injury while celebrating his victory at Richmond Raceway on Sunday. Davey Segal of SiriusXM NASCAR Radio said that Dillon had a hurt oblique/rib that was aggravated by crew member Paul Swan when he “smacked him while celebrating.” Dillon was seen grimacing while at Victory Lane. He suffered the injury earlier in the week while playing basketball in Denny Hamlin‘s league. Dillon wrecked Hamlin and Joey Logano during the final lap of the race that went into overtime. Hamlin and Logano have sounded off on Dillon, and while he’s not happy with what he did, Dillon knew h…