Last week, Cleveland Browns center Alex Mack accused Kansas City Chiefs defensive lineman Shaun Smith of grabbing his genitals during the Browns' 16-14 loss.

Following the Chiefs' 31-10 blowout of the San Francisco 49ers on Sunday, 49ers rookie right tackle Anthony Davis accused Smith of the same thing.

"He kept doing it," Davis said according to David White of the San Francisco Chronicle, who added that Davis gestured to show how Smith touched him during blocks. "That hasn't happened to me since high school."

Like Mack, Davis retaliated and punched Smith, which drew a 15-yard unnecessary roughness penalty.

"I'm not known for being a dirty player or anything like that, so I don't know what that was all about", Smith said after the Mack accusations.

The Chiefs have a bye in Week 4, but after two weeks of these accusations, the Indianapolis Colts offensive linemen will be aware of Smith's new-found reputation.