Brock Lesnar’s debut wasn’t some run-of-the-mill heavyweight when he entered the Octagon.

No, Lesnar took on former heavyweight champion Frank Mir.

Mir, who would go on to win the interim UFC heavyweight title again after the bout with Lesnar, earned a submission over the ex-WWE star – who later returned to pro wrestling.

Sunday night Mir takes on Antonio “Bigfoot” Silva in the main event of UFC Fight Night 61. You can see a complete fight replay of Mir-Lesnar in the video below.

Of note, Lesnar did return the favor, earning a win in the rematch with Mir.