As for the UFC, its fastest KO came in a welterweight bout at UFC 239 when Jorge Masvidal delivered a flying knee to Ben Askren in just five seconds.
Ben Askren's UFC career didn't go the way he planned ... Masvidal made quick work of Askren, knocking him unconscious with a flying knee just five seconds into the fight. The fight made Askren ...
The former UFC flyweight champion, who was traded to ONE Championship for Ben Askren in 2018 ... knocked out in five seconds by a flying knee from Jorge Masvidal in 2019 and submitted by Demian ...