Antonio Rodrigo Nogueira, the only man to hold both UFC and Pride heavyweight titles, spoke with Sherdog.com while he was in Las Vegas to watch his brother fight at UFC 106.

Now scheduled to face Cain Velasquez at UFC 110 in Australia on Feb. 21, Nogueira explained the reason for his withdrawal from the original Jan. 2 date.

Check out this exclusive video to watch the former champ discuss his on-and-off battle with multiple staph infections over the past year.

He also discusses the possibility of fighting for a potential interim title should champion Brock Lesnar remain sidelined for the foreseeable future.