Veteran referee Jim Clark missed part of the third quarter of Friday's game between the Nets and Magic after he was apparently kicked in the head by a tumbling performer right before the second half was set to begin.

Clark was waiting for the teams to take the floor to start the second half when an acrobatic performer doing back flips inadvertently kicked him in the head, knocking him to the floor.

Clark remained on the floor for several minutes and received medical attention from the Nets' training staff. He eventually walked off the floor with assistance from Nets trainer Tim Walsh.

The second half began with only two officials, Ron Olesiak and Michael Henderson. Clark returned with just over 5 minutes remaining in the third quarter.