Mono pushes back Lesnar-Carwin battle

Updated: November 6, 2009, 3:11 PM ET news services

Heavyweight champion Brock Lesnar has mononucleosis and won't be able to defend his title Jan. 2 at UFC 108 against Shane Carwin, UFC president Dana White texted to the Los Angeles Times.

The fight, originally scheduled for Nov. 21, was pushed back to January because of a Lesnar illness. Now, White says Lesnar has mononucleosis and can't train for six weeks, according to his text to the Times.

UFC officials said they hope to have Lesnar back in the Octagon by March.

"Guys my manager Jason Genet just told me that UFC 108 is not happening," Carwin wrote at "Brock has Mono and what the UFC has told me is that I have earned a title shoot [sic] but I have to wait for the title holder. I hope Brock gets well soon."

The Jan. 2 card, set for the MGM Grand Arena in Las Vegas, also lost a scheduled bout between Anderson Silva and Vitor Belfort. Silva has what a UFC official said to the Times was a "nagging injury."

The Nov. 21 card -- UFC 104 -- will feature Tito Ortiz against Forrest Griffin as its main event.

Lesnar hasn't fought since July at UFC 100. Carwin is undefeated through 11 pro fights, but has not competed since March.