Glover Teixeira has suffered a knee injury in training that has nixed his UFC Fight Night 61 headline bout with Rashad Evans in Brazil on February 22nd.

At this stage there’s no word on how long Teixeira will be out for and with few suitable opponents being available to fight on that date the UFC have not yet decided what to do with Evans.

With that in mind the promotion have made the decision to move a heavyweight fight between Frank Mir and Antonio Silva to serve as UFC Fight Night 61’s main event instead.

The fight between Mir and Silva had originally been expected to take place on the UFC 184 event in Los Angeles a week later on February 28th.

This is a big fight for both men who’ve been struggling to find a win inside the octagon lately. By the time they do eventually lock horns Mir will have been out of the cage for over a year after being outwrestled to a unanimous decision loss by Alistair Overeem at UFC 169.

That was the 35 year-old’s fourth loss in a row and potentially leaves him facing either retirement or the UFC’s exit door if he can’t find a way back into the win column.

‘Bigfoot’s’ last win was actually via knockout against the aforementioned Overeem, but that was back in February of 2013 and since then he’s gone three fights without a victory, including a TKO defeat against Cain Velasquez and a KO stoppage at the hands of Andrei Arlovski last time out.

Sandwiched inbetween that was an instant classic slugfest with Mark Hunt that originally ended in a majority draw decision, but was later amended to a no-contest ruling after Silva tested positive for elevated levels of testosterone post-fight.