Greene started his career aged 26 on May 2010. His career record to date stands at 6-1-0 with a mixed bag of results so far in the career. He started his best winning streak on May 2010 however, this came to an end on April 2012. In this period he won a total of 5 fights.
Greene fought and defeated Ryan Clark in a successful 4 round debut. The decision was left to the judges after the final bell in a PTS result favouring Greene. Continuing on from his successful debut, Greene won his next 3 fights taking his record to 3 wins.
Simone Lucas was up next for Greene on December 15th, 2010. Greene continued with his winning streak by beating Lucas. Continuing his career, Greene fought Simone Lucas in 2010 over 4 rounds. Greene was the 4th person to go the distance with Simone Lucas.
On April 6th, 2012 Greene fought and beat Dalton Miller (3-4-0) to continue his unbeaten streak. Greene was the 6th person to go the distance with Miller. Greene fought Dalton Miller in 2012, the result was via PTS.
Ensuring he remained unbeaten, Ryan Greene defeated Ciaran Healy on May 5th, 2012 in his most recent fight. Greene found himself up against Ciaran Healy for his next fight. Greene was the 4th person to go the distance with this opponent resulting in a win for Greene.