Jamaican Jason Jackson produced one of the most surprising Mixed Martial Arts (MMA) outcomes of the year, dethroning the previously undefeated Yaroslav Amosov to become the new Bellator welterweight champion at Bellator 301 at the WinTrust Arena in Chicago on Friday.

Jackson, nicknamed “The Ass-Kicking Machine,” made Amosov uncomfortable from the outset, applying constant pressure and defending Amosov’s takedowns brilliantly.

In the third round, Jackson dropped Amosov with a straight right hand and then put the pedal down, finally ending the bout with a nasty short uppercut as Amosov tried for a desperation takedown.

Jackson moves to 17-4 and is the seventh fighter to hold the Bellator welterweight title, while the loss was the first of Amosov’s career, moving him to 27-1 overall.

Jackson was born in Spanish Town, Jamaica on October 30, 1990. At the age of 12 he moved to South Florida, graduating from Miramar High School, where he competed on the school’s wrestling team. He began training for mixed martial arts at the age of 19.