Miller had his first professional fight on November 19, 2005 against Eddie Fyvie at Reality Fighting 10. Miller controlled the fight and earned a unanimous decision. Miller earned two more victories with Reality Fighting, with a rear naked choke victory over Kevin Roddy and an arm triangle choke victory over Joe Andujar.
The quick victories earned Miller a title shot and he cut down in weight to fight Muhsin Corbbrey for the featherweight title. Miller mounted Corrbrey in the second round and battered his opponent before securing an arm for the armbar victory. At Reality Fighting 14, Miller took on present UFC Lightweight Champion Frankie Edgar for the Reality Fighting Lightweight Title. Edgar controlled the fight, but Miller secured a tight guillotine choke late in the final round. Edgar fought through the choke to earn the unanimous decision and capture Miller’s title.
In the weeks prior to Reality Fighting 14, Planet Jiu-Jitsu closed down. Miller began training at American Martial Arts in Whippany, New Jersey with his brother Dan in January, 2007.
Ultimate Fighting Championship
Jim and his brother Dan were signed to the UFC and made his debut at UFC 89 where he defeated David Baron via Rear naked Choke in the 3rd round. At UFC 100, Miller won a bloody one-sided unanimous decision over Mac Danzig.
Miller was scheduled to face Thiago Tavares on September 19, 2009 at UFC 103, but Tavares was forced to drop out due to a knee injury suffered while training. UFC newcomer Steve Lopez stepped in to replace Tavares. Both fighters exchanged competitively on the feet, but Miller won after Lopez injured his shoulder in round two.
Miller defeated WEC import, Kamal Shalorus on March 19, 2011 at UFC 128. Miller won the fight by TKO in the third round, after landing an uppercut and knee to Shalorus’s face.
