Just one day into the new NBA season, the Detroit Pistons may have already suffered the strangest and most bizarre foul of the season.

During the Pistons’ season opener against the Indiana Pacers, referees gave new coach JB Bickerstaff a technical foul after Detroit sent six players onto the field. The Pistons hit the ball in and brought it onto the field before the referees realized they had an extra player standing completely unguarded in the corner.

Bickerstaff was angry after his team was given the “Too Many Men” violation, an infraction that is common in hockey and football but rare in basketball. Bickerstaff could be overheard on the broadcast pleading his case to the officials, and the hot mic heard him say that one of his players was “trying to leave the floor.”

The referees weren’t having it and gave the team a technical foul, which sent Bennedict Mathurin to the free throw line for a shot. He buried it and brought the Pacers within one point with about eight minutes to play.

It was an unfortunate blemish in Bickerstaff’s franchise debut, and the Pistons ultimately lost 115-109 despite a 28-point outing from star guard Cade Cunningham. They will try to bounce back in a match against the Cleveland Cavaliers on October 25th.