Mmaweekly.com

Ultimate Fighting Championship interim heavyweight champion Frank Mir and UFC heavyweight titleholder Brock Lesnar will rematch to unify the belts later this year. Mir recently spoke with MMAWeekly.com about the rematch, Lesnar's improvements and why he feels he'll be the undisputed, two-time heavyweight champion after what will be their second fight.

Mir defeated Lesnar in the former professional wrestler's UFC debut at UFC 81 on Feb. 2, 2008.

"There's a lot of hype behind Brock. I don't think that right now people have me as a clear-cut favorite in the fight as far as what I understand and what people are telling me. So, to be able to go out there and fight him for the title, and he was really the start of what kind of got me back into the limelight, that I think this helps finish it off," the Las Vegas resident said about fighting Lesnar for a second time. "I'm happy to go in and fight Brock and do it again."

Lesnar made his UFC debut in his second professional mixed martial arts bout and surprised a lot of people in his losing effort against the more experienced Mir. Looking ahead to the rematch, the 29-year-old heavyweight doesn't think it will be a walk in the park.

"I don't think it will be an easy fight by no means. I think he's going to learn his lessons from the first time. I just still think that I'm the better fighter. I've been doing it a lot longer. There's not that drastic of a size difference between the two of us," Mir told MMAWeekly.com. " I stay between 250 and 260. No matter what, he has to show up at 265 the night before. How much weight can he put on? Ten-fifteen pounds, tops