Welcome to the UFC, Sergey Spivak. The undefeated 24-year-old entered the UFC with a perfect 9-0 record, having finished all nine of his opponents - eight of which were inside one round. But fighters in the UFC are completely different animals, and Spivak found that out pretty quickly at UFC Fight Night 151 on Saturday.
Spivak's debut ended in just 50 seconds as Walt Harris rained down a flury of heavy blows that sent him down to the mat in a curled-up fetal position. Check out the quick finish below.
This was Harris' first fight back in the Octagon since he tested positive for LGD4033 following UFC 232 in December, resulting in a four-month suspension. Harris was expected to face Alexey Oleynik in his return, but Oleynik was moved to UFC on ESPN+ 7 to fight Alistair Overeem after Alexander Volkov was pulled from the event. In turn, Harris faced Sergey Spivak, who looked completely outmatched in the fight.