MLB commissioner Rob Manfred's tactic of going around to clubhouses around the league as he attempts to build support for a salary cap with looming negotiations for a new collective bargaining agreement was recently met with push back from Bryce Harper.

Bryce Harper's confrontation with Rob Manfred has gained attention across Major League Baseball, and one former player is warning Harper about it.

Philadelphia Phillies star Bryce Harper had a confrontation with commissioner Rob Manfred during a meeting with the team last week, reports ESPN. Harper told Manfred to "get the f--- out of our clubhouse" if the commissioner wanted to talk to Phillies players about the possibility of a salary cap.