Dec30.2011 @AlistairOvereem makes his UFC debut, & sends Brock Lesnar into retirement with a kick to the body pic.twitter.com/nsgBiNUFEI

— MMA History Today (@MMAHistoryToday) December 31, 2015

On this day 4 years ago the highly touted prospect Alistair Overeem made his UFC debut against Brock Lesnar.

Overeem’s debut was in fact an emphatic one, in the very first round he finished former UFC heavyweight champion Brock Lesnar with a body kick that ultimately resulted in Lesnar retiring from MMA.

The fight was the first for Lesnar since losing the UFC heavyweight championship to Cain Velasquez over a year prior to the bout with Overeem.

You can re-live the moment above!