Mahomes (knee) participated in Kansas City's opening OTA practice Tuesday, Nate Taylor of ESPN reports.
While the extent of his participation wasn't revealed, a video was posted on social media of the QB making a throw on the field while sporting a brace on his left knee. Mahomes is bouncing back from December surgery to repair a torn ACL and LCL, and his participation in Tuesday's session, in any capacity, is encouraging. The two-time MVP's stated goal is to be ready for Week 1 action, and in recent weeks Kansas City has expressed optimism that Mahomes will be in uniform Sept. 14 against the Broncos.