Brock Lesnar is in extremely bad shape and there are questions as to whether he will ever fight again.
Lesnar, 32, is in far worse shape than he has been letting on. He went to Canada last week to try to get some rest, collapsed, and was rushed to the hospital. He has mono and also something else that he doesn't want to get out, and all we now is that he does not have cancer and he does not have AIDS. It is, however, extremely serious and he will not be fighting again for a long, long time, if he is able to fight again.
Dana White is heading to Minnesota tonight and will be working to get Lesnar to the Mayo Clinic or equivalent medical facility for treatment.
Also, Antonio Rodrigo Nogueira has a staph infection and his fight with Cain Velasquez at UFC 108 is off. Nogueira will need an IV to hopefully get the infection out. He is also in bad shape.
With Lesnar out indefinitely, Shane Carwin will be undergoing knee surgery, so he will not be available to face Velasquez at UFC 108.