Former UFC heavyweight champion Brock Lesnar is a coach of...

Former UFC heavyweight champion Brock Lesnar is a coach of Season 13 of "The Ultimate Fighter." Credit: Spike

Former UFC heavyweight champion Brock Lesnar had to cancel his book tour stop  Book Revue in Huntington scheduled for June 7.

Lesnar underwent surgery last Friday in response to a second bout with diverticulitis, an intestinal ailment. Lesnar is unable to travel for eight weeks, per a rep for book publisher HarperCollins. Lesnar's book is titled "Death Clutch: My Story of Determination, Domination, and Survival."

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