Record: 19 - 8
Height: 5'8" (173cm)
Weight: 156 lbs
Age: 39
Camp: Team Sityodtong
Marcus Davis Tweets

Marcus Paul Davis (born August 24, 1973), nicknamed "The Irish Hand Grenade" (and "The Celtic Warrior" while fighting in Northern Ireland), is an American mixed martial arts fighter. He currently fights as a welterweight in the UFC and in independent MMA promotions in the United States. He was a contestant on the Ultimate Fighter 2 on Spike TV.

Prior to boxing, Marcus did martial arts from the age of eight. In 1995, Davis, then based in Massachusetts, started grappling training with Joe Maffei. In 1997, he moved back to Bangor and opened up an MMA school, while running a bar. The doormen took classes at the school, one of whom was Tim Sylvia. After Tim joined Miletich Fighting Systems in 2000, Marcus quickly followed. More recently, he has trained with Mark Dellagrotte and his own team in Bangor, Team Irish. He also frequently visits Jorge Gurgel's main MMA academy in West Chester, Ohio. He and Gurgel struck up a friendship on The Ultimate Fighter 2.

Marcus Davis entered professional MMA on August 22, 2003 with a first round TKO of Shaun Gay. Though later describing himself as "one-dimensional", he put together a 3-2 pro MMA record.

In 2005, Marcus was a contestant on The Ultimate Fighter 2. Coming in with reputed boxing skills, he picked Joe Stevenson in episode four in what proved to be a mismatch, as Davis was quickly taken down by the eventual winner and submitted. He was later brought back in episode 10 to cover for Jason Von Flue, who suffered a cut on his forehead in practice, though Von Flue's cut was healed enough in time to fight. Marcus fought on the undercard of the finale, where he lost to Melvin Guillard.

Following the series, Davis strongly considered retirement but recuperated from a shoulder injury picked up against Joe Stevenson and went back to MMA training. He has subsequently bounced back with 11 wins, including a triumphant return to the UFC at Ortiz vs. Shamrock 3: The Final Chapter. He now considers himself a mixed martial artist and not a boxer fighting in MMA.

In Davis' fight against Paul Taylor at UFC 75 in London, England he was knocked down by a kick to the neck, but was able to recover, gain a dominant position, and secure an armbar as Taylor desperately scrambled to regain control. Marcus won Fight of the night as well as submission of the night for that fight. For earning the submission and fight of the night awards, he was awarded $80,000 in bonuses. His next fight was a KO win against Jess Liaudin at UFC 80 in Newcastle, England.

Marcus Davis lost against Mike Swick at UFC 85 by unanimous decision, ending his six-fight undefeated streak in the octagon and eleven-fight winning streak in MMA. He got back to winning ways with a submission victory over England's Paul Kelly at UFC 89 and split decision victory over Chris Lytle at UFC 93 in Dublin, Ireland.

Davis' latest fight was on January 17, 2009, against Chris Lytle at UFC 93. Both fighters are former boxers and had discussed a potential fight in their futures since early 2008. Lytle called out Davis at UFC 89. He suggested that the fight take place in Ireland, where Davis had garned a substantial following due to his emphasis on his Irish roots. Leading up to the event, both fighters promised to stand and trade blows for the entire fight, rather than engage in grappling. Lytle managed to stun Davis several times, but Davis used superior footwork, counterpunching, and kicks to win a split decision. The bout shared Fight of the Night honors with the Mark Coleman/Mauricio Rua co-main event, earning Davis a $40,000 bonus.