James Crosby, "(J.R.)The Professor", is an active American professional MMA fighter from Myakka, Florida, United States in the Heavyweight division. He holds a professional record of 1-3, known for finishing opponents (1 by KO/TKO). He is currently ranked #4919 Men's Pound for Pound and #345 Heavyweight by FightTruth's model. He has lost 2 consecutive fights.