coach Lionel Hollins has banned gambling on team flights following a fight between two teammates over a debt from a card game.
Last season, several NBA teams banned gambling on flights after a disagreement over a card game debt between then-Washington Wizards teammates Gilbert Arenas and Javaris Crittenton led to an incident in which both men brandished guns in the team's locker room.
Yahoo! Sports first reported that according to unidentified sources, Mayo owed Allen money following the game on Monday and became increasingly angry toward Allen when asked to settle the debt. Several players eventually had to separate the teammates.
Grizzlies general manager Chris Wallace acknowledged the altercation in an e-mailed statement but provided no details about what caused the skirmish. He said: "The club considers the matter closed and will not comment further."
Allen had 19 points in the Grizzlies' 110-105 victory over Oklahoma City on Tuesday night. Mayo missed Tuesday's game with bronchitis.
Information from ESPN The Magazine's Chris Broussard and The Associated Press was used in this report.