UFC legend Ronda Rousey was left shocked by a stunning knockout in Power Slap.
The former fighter had a front row seat for in Fontainebleau, Las Vegas.
And she was left gobsmacked after the bout between professional wrestler Stunt Marshall, and Dontae Smiley.
Smiley had the first slap but was unable to impose any lasting damage on his opponent.
And Marshall made him regret it immediately as he sent him crashing to the floor with a powerful left-handed slap.
To make matters worse Smiley’s head slammed into the podium between them as he fell, before falling into the arms of two support staff.
The KO stunned the arena, including who covered her mouth and looked amazed.
Fans were shocked by the blow and the devastating nature of the KO.
One reacted saying: “That was 🥶”;
Another added: “Cannot be good for the brain. Should be outlawed in my opinion.”;
A third wrote: “Ended bro.”;
And another commented: “Morning... This guy got slapped into next week!”;
