The slap heard 'round the world struck Jake Paul on the left cheek Thursday night. Mike Tyson whipped his open-palmed right hand across Paul’s face at the weigh-in before their wild and weird and puzzling event.

Paul and Tyson have been promoting this Netflix match-up all year, which was postponed from its original date of July 20. Broadcasting live from the AT&T Stadium in Arlington, Texas, the event will feature a series of preliminary matches before the main card on Friday night.