The UFC recently announced at a last minute press conference that Brock Lesnar would be withdrawing from his fight against Junior Dos Santos due to a recurrence of diverticulitis.

The fight which was scheduled for UFC 131 in Vancouver was meant to be Brock's come-back fight after losing his title to Cain Velasquez, and has been recently built-up in the Ultimate Fighter reality tv series where Brock and Junior are both coaches.

At this stage Brock said that he hopes to continue fighting but will not be making a decisions as he awaits results from the Mayo clinic. Junior Dos Santos will now face Shane Carwin in place of Brock.

According to MMA Junkie Dana White has recently announced that Junior Dos Santos and Brock Lesnar will be the coaches for the next season of TUF. The 13th season will debut on the 30th of March, with both fighters squaring off in June, possibly in Toronto.

It has been determined that the fight will not be for an interim heavyweight title (due to an injured Velasquez), but that the winner of the fight will get a shot at the champion once he's recovered.

Lesnar is coming off his recent loss to Velasquez whereas Dos Santos has been tearing through his opponents until he went to a decision against souther slugger Roy Nelson.