The Chicago Bulls announced a one-game suspension Monday for point guard Rajon Rondo.

The official reason given is the always amusingly-vague “conduct detrimental to the team.”

Bulls announce 1-game suspension for Rajon Rondo for conduct detrimental to team.

— K.C. Johnson (@KCJHoop) December 5, 2016

Reportedly, there was a “heated exchange” with an assistant coach.

Rajon Rondo — suspended for tonight's game — had a "heated exchange" with a Bulls assistant in Mavericks loss, sources tell @TheVertical.

— Adrian Wojnarowski (@WojVerticalNBA) December 5, 2016

Rondo apologized to the coach and accepted responsibility in the aftermath of Bulls suspension, league sources tell @TheVertical.

— Adrian Wojnarowski (@WojVerticalNBA) December 5, 2016

Rondo has suited up in 17 games this season (all starts), averaging 8.2 points, 7.2 assists and 6.7 rebounds in 30 minutes per night.