The San Francisco 49ers' Super Bowl hangover isn't going away easily, with the Kansas City Chiefs sending them below .500 on ...

The San Francisco 49ers took potentially more than one loss against the Kansas City Chiefs. All-Pro wide receiver Brandon ...

The Kansas City Chiefs own the San Francisco 49ers. Head coach Kyle Shanahan fell to 0-5 against the Chiefs and head coach ...

San Francisco 49ers wide receiver Brandon Aiyuk might have suffered a significant injury in Sunday's loss to the Kansas City ...

The 49ers were without three of their top playmakers for much of the matchup, with running back Christian McCaffrey (Achilles ...

Chiefs safety Bryan Cook appeared to take a shot at Trent Williams, who responded by punching Cook in the back of the helmet.

The San Francisco 49ers lost their Super Bowl rematch to the Kansas City Chiefs on Sunday, 28-18, but they may have lost a ...

Patrick Mahomes overcame two interceptions to deliver a few big plays with his feet and the Kansas City Chiefs remained the ...

San Francisco 49ers wide receiver Brandon Aiyuk exited Sunday's loss against the Kansas City Chiefs during the first half ...

Trent Williams saw his day end early in the San Francisco 49ers Week 7 matchup against the Kansas City Chiefs. The left ...

San Francisco 49ers star Trent Williams was ejected for throwing a punch at a Kansas City Chiefs defender late in Sunday's ...

Latest injury update on Brandon Aiyuk, who injured his leg and was carted off during the 49ers' game against the Chiefs on ...