MIAMI (AFP) — The Miami Heat's team mascot needed medical treatment after a staged "fight" with former UFC mixed martial arts champion Conor McGregor.

The Irishman took to the court with a Heat compere during a timeout during Game 4 of the National Basketball Association Finals against the Denver Nuggets for a pre-planned promotional spot.

McGregor was roundly booed by the Heat crowd as he promoted his product and was then approached by the Heat mascot "Burnie" in a costume and boxing gloves.

The fighter punched the mascot to the ground and staff mocked trying to bring him back to consciousness and dragged "Burnie" off court.

However, the person inside the costume was then taken to a local emergency room and released the same evening after receiving pain medication, according to The Athletic and the Miami Herald.

The product McGregor has been promoting was a pain relief spray.

The Heat lost the Game 4, 108-95, and are 3-1 down in the best-of-seven final series.