The Chiefs officially placed Kemp (knee) on injured reserve Tuesday, Pete Sweeney of ArrowheadPride.com reports.
Kemp suffered a torn ACL and MCL at practice over the weekend, so this move was just a matter of time. The 24-year-old pass catcher suited up for all 16 games in Kansas City last year but was considered a fringe-roster player heading into 2019. He will now be forced to focus on his recovery.