Although the Ballybofey man has a stunning record of ten wins form ten starts, tonight will see him star on a major undercard at Sin City in America.
The 24 year old will be watched by a lot of people when he slugs it out on the Saul Alverauz and Amir Khan for the WBC middleweight title.
Jason had no problem reaching his weight and was cheered on by a number of fans from back home in Co Donegal.
We will bring you a full report from tonight’s fight.
All pics by Ricardo Guglielminotti