In the summer of 2011, Lesnar announced that he was returning to action, stating, "I feel like a new man. Healthy. Strong. I feel like I used to feel". His return match was scheduled to be at "UFC 141" on December 30 in Las Vegas against former Strikeforce heavyweight champion Alistair Overeem. Overeem won the fight by way of technical knockout in the first round. Lesnar then retired from MMA, mentioning his struggles with diverticulitis and saying "tonight was the last time you'll see me in the octagon".