section_path: Mixed martial arts career/Later career
section_name: Later career
paragraph_text: Later career
  
  After his loss to Yoshihisa Yamamoto, Kerr was supposed to make his comeback against Wes Sims in the American Championship Fighting (ACF) on May 6, 2006, at the Denver Coliseum, but was not medically cleared to fight due to a hand injury.
  
  On February 11, 2007, Kerr fought Mustafa Al Turk at Cage Rage 20: 'Born 2 Fight'. Kerr lost his footing after an attempted roundhouse kick and he was mounted, stunned with a series of blows and submitted within the first round. Kerr was supposed to fight Sean O'Haire on August 17 in the Global Fighting Championships first show at the Mohegan Sun Arena but was cancelled due to his high blood pressure and his license was suspended indefinitely.
  
  Mark Kerr fought in the World Cage Fighting Organization (WCO) in November 2007, winning his bout against Steve Gavin by Americana after 1:39 of the first round.
  
  In 2008, Kerr launched a comeback. In March, Mark beat Chuck Huus by Submission (Keylock/Americana) at CCCF – Battle on the Border. In April, he lost to Oleg Taktarov in one round by kneebar. Two months later, Kerr was choked out in the opening round by deaf fighter Tracy Willis at a C-3 Fights show in Cocho, Oklahoma. On July 26, Ralph Kelly stopped Kerr in the first round at Xp3. On September 27, 2008, Kerr lost to fellow heavyweight Jeff Monson by rear-naked choke, in a battle of former ADCC champions.
  
  On August 28, 2009, Kerr faced fellow wrestler Muhammed Lawal at an M-1 Global event. Kerr was taken down and subsequently pounded into unconsciousness in just 25 seconds, receiving several blows to the head after he was clearly unable to defend himself. This led the event's TV commentators to openly speculate that Kerr's fighting career was over. Guy Mezger, in the post-fight discussion, suggested that it was time for Kerr to "find another vocation". Kerr only won four of his 15 fights since 2000 and lost his last five fights.
  
  After his loss to Yoshihisa Yamamoto, Kerr was supposed to make his comeback against Wes Sims in the American Championship Fighting (ACF) on May 6, 2006, at the Denver Coliseum, but was not medically cleared to fight due to a hand injury.
  
  On February 11, 2007, Kerr fought Mustafa Al Turk at Cage Rage 20: 'Born 2 Fight'. Kerr lost his footing after an attempted roundhouse kick and he was mounted, stunned with a series of blows and submitted within the first round. Kerr was supposed to fight Sean O'Haire on August 17 in the Global Fighting Championships first show at the Mohegan Sun Arena but was cancelled due to his high blood pressure and his license was suspended indefinitely.
  
  Mark Kerr fought in the World Cage Fighting Organization (WCO) in November 2007, winning his bout against Steve Gavin by Americana after 1:39 of the first round.
  
  In 2008, Kerr launched a comeback. In March, Mark beat Chuck Huus by Submission (Keylock/Americana) at CCCF – Battle on the Border. In April, he lost to Oleg Taktarov in one round by kneebar. Two months later, Kerr was choked out in the opening round by deaf fighter Tracy Willis at a C-3 Fights show in Cocho, Oklahoma. On July 26, Ralph Kelly stopped Kerr in the first round at Xp3. On September 27, 2008, Kerr lost to fellow heavyweight Jeff Monson by rear-naked choke, in a battle of former ADCC champions.
  
  On August 28, 2009, Kerr faced fellow wrestler Muhammed Lawal at an M-1 Global event. Kerr was taken down and subsequently pounded into unconsciousness in just 25 seconds, receiving several blows to the head after he was clearly unable to defend himself. This led the event's TV commentators to openly speculate that Kerr's fighting career was over. Guy Mezger, in the post-fight discussion, suggested that it was time for Kerr to "find another vocation". Kerr only won four of his 15 fights since 2000 and lost his last five fights.