Sakurai KTFO Aoki with brutal knees on the ground. This was after Aoki made Eddie Alvarez run away from his butt scoot and the hello Japan fight, so Aoki's stock was very high. Also Aoki's an asshole so this 27 second KO was very gratifying
On JDS's dominating run to the title, people usually forgot that in his second UFC fight, he also welcomed Stefan Struve to the UFC by KOing him in 54 seconds
Maybe not so underrated and just slightly over 60 seconds, but Marlon Moraes taught us that Aljamain Sterling's weakness is against knees