It appears Ryback may have been injured in his match with Bray Wyatt at WWE Payback Sunday night. Ryback was checked on by WWE trainers after the match due to concern about a possible broken rib.
The injury may have happened when Wyatt hit his senton splash from the ropes to the floor on Ryback. PWInsider notes that Ryback was with WWE’s medical staff backstage at the pay-per-view.
It was also mentioned by the panel later in the show that Ryback may have suffered a broken rib.