Harper reportedly told Manfred to " get the f*** out of our clubhouse " during a contentious team meeting with the commissioner, per Jeff Passan of ESPN.

The meeting on labor matters took a tense turn when the superstar got in the face of baseball's leader.

Manfred responded to Harper by saying he was "not going to get the f--k out of here" and felt it was important to talk about how to grow the sport, as well as threats to the league's business.