Thornton was in the midst of a big day. After already scoring two touchdowns, the former second-rounder hauled in a 55-yard catch from Patrick Mahomes and suffered a gruesome ankle injury when he was tackled by Treydan Stukes. Thornton attempted to stand up and celebrate the big play, only to notice the injury, and immediately went down before being carted from the field. This has the look of a season-ending injury for Thornton, who caught 5-of-8 targets for 111 yards and two touchdowns on the day.