Philadelphia Phillies star Bryce Harper dropped an f-bomb on Major League Baseball commissioner Rob Manfred in a heated confrontation last week about a potential salary cap, ESPN reported Monday.

An irate Harper reportedly got in Manfred’s face and told him to “get the f– out of our clubhouse” if he wanted to discuss such a sensitive economic issue.

Manfred replied that he was “not going to get the f– out of here,” insisting it was important to talk about threats to the league’s business and ways to grow the game, sources told ESPN.

Other players tried to defuse the situation and Harper and Manfred shook hands after the meeting, but Harper would