The party responsible for the violent jumping knockout was Joaquin Buckley (19-6 MMA, 9-4 UFC), who crumpled “Wonderboy” Thompson (17-7-1 MMA, 12-7-1 UFC) with a jumping right hook that ended the fight at 2:17 of Round 3. The welterweight bout closed out the UFC 307 preliminary card at Delta Center in Salt Lake City.

Joaquin Buckley has stunned UFC fans with a devastating comeback knockout over fan-favorite fighter Stephen Thompson at UFC 307. Buckley struggled with Thompson's Karate striking in the first two rounds,

It was a stunning finish after Buckley had struggled on the feet against the crafty Thompson, but it only took one big shot to change everything. The end came at 2:17 in the third round and following his latest win,

Welterweight contender Joaquin Buckley Knocks Out Stephen 'Wonderboy' Thompson in the prelims of UFC 307 in Utah.

A welterweight bout between Stephen Thompson and Joaquin Buckley served as the featured prelim of tonight's UFC 307 event.

Joaquin Buckley earned his biggest win to date at UFC 307 as he stopped Stephen Thompson in dramatic fashion in the third round.

In the featured prelim of UFC 307, we saw a fun matchup in the welterweight division. Former title challenger and ninth ranked Stephen "Wonderboy" Thompson

Joaquin Buckley grabs a huge knockout win in Round 3 over Stephen "Wonderboy" Thompson at UFC 307.

Joaquin Buckley shocked fight fans around the world when he delivered a knockout blow to Stephen Thompson in the third round of their UFC 307 bout. The fight, which had been closely contested up until that point,