Brandon Flowers was diagnosed with a concussion and will not return to Sunday's game against Kansas City, the San Diego Union-Tribune's Michael Gehlken reports.

Flowers was diagnosed with a concussion and will not return to Sunday's game against Kansas City, the San Diego Union-Tribune's Michael Gehlken reports.

Analysis:

A tough break for Flowers, who finishes with three tackles (one solo) against his former team. The Chargers play Thursday night at Denver, giving him just three days to advance through the league's concussion protocol. It seems unlikely that he'll be cleared to play in that game, but we'll monitor his status throughout the week.