Diverticulitis Brock Lesnar

The UFC and Brock Lesnar announced awful news today. Lesnar is battling diverticulitis again. The potentially life-threatening digestive ailment will sideline the former UFC heavyweight champion for an indefinite period of time.

While battling the ailment with antibiotics, Lesnar can't train the way he needs to, so he's dropped out of his fight against Junior dos Santos at UFC 131 in June. Shane Carwin will move into the slot vacated by Lesnar.

Lesnar said he spent 14 hours yesterday at the Mayo Clinic to get answers about the latest run-in with the ailment.

The 6-foot-4, 275-pound MMA star battled diverticulitis from the fall of 2009 into the spring of 2010. He dropped 40 pounds. In his first fight back at UFC 114, Lesnar beat Shane Carwin.