The Kansas City Chiefs have made a late addition to their injury status report on Sunday, ahead of the primetime matchup with the Detroit Lions.

The Chiefs have now listed starting left tackle Josh Simmons as questionable for the Week 6 game for personal reasons, which have not been disclosed. Simmons has played well as the Chiefs starter, taking over the role as a rookie. The Ohio State product was the final pick of the first round in April's draft.

Kansas City has Wanya Morris in reserve. Morris started 11 games at left tackle for the Chiefs a year ago, but the team prioritized replacing him and his penalty-prone pass protection in the draft.

The official inactives for the 8:20 p.m. ET kickoff come out later this evening. If Simmons can't go, that's a big loss for the Chiefs. Detroit is already without starting left tackle Taylor Decker and his top reserve, Giovanni Manu, for the game.