The San Francisco 49ers got pushed around by the Kansas City Chiefs on Sunday and head coach Kyle Shanahan didn't mince his words after the game.

After the 28-18 loss in the Super Bowl rematch, Shanahan gave a blunt review of his team's performance, saying: “There's no sugarcoating this. We got a kick in the ass today.”

That's certainly one way to put it.

The 49ers allowed the Chiefs to rush for 184 yards on 39 attempts, an average of 4.7 yards per carry. They held Patrick Mahomes and Kansas City's passing game under control, allowing just 145 yards and forcing two interceptions from Mahomes. But the Chiefs steamrolled the pack as they scored four rushing touchdowns.

Meanwhile, Kansas City's defense forced three interceptions from Brock Purdy and held running back Jordan Mason to 58 yards rushing.

It wasn't a pretty game, but the Chiefs seemed to thrive on the ugliness and improved to 6-0. The loss dropped the Niners to 3-4 and now they will likely be without star receiver Brandon Aiyuk for a while because Shanahan fears he has torn his ACL.

It's been a bad week for the 49ers and Shanahan knows it.