The Seattle Mariners clubhouse was locked as shoving, scuffling and arguing could be heard inside before their game against the Baltimore Orioles on Tuesday at Safeco Field.
Dee Gordon initially asked media to leave what was an open clubhouse before the doors were locked. They briefly opened because the wrestling had extended just outside of the locker area and players ran into the doors before one player quickly re-shut them.
Why the incident occurred or who the instigators were behind it were unclear.
Mariners manager Scott Servais was on the field when the apparent fight broke loose and he briefly addressed it in his pregame interview with reporters.