The 11/4 favourite, was left in a share of the lead at the fourth last after Ard Cregg crashed out.
He went a few lengths clear on the approach to the straight, but was strongly pressed and joined by Sir Abbot on the approach to the last.
The duo had a good battle on the run in with Rebel Cry getting back up to score by a head.
Trainer Norman Lee said: “That’s our best winner yet and its great to have a feature race winner in Roscommon.
“He was only idling in front. He probably hit the front a bit soon but with the light weight he thought he was loose.
“He jumped like a stag and fair play to (jockey) Jack Kennedy.”
Conor Maxwell suffered a suspected broken collarbone after a fall from King Norman at the first and was taken to hospital for x-rays.
Blood Crazed Tiger ran out a comfortable winner of the Kepak INH Flat Race, scoring under Jamie Codd for Gordon Elliott and Gigginstown House Stud.
Previously trained by Pat Doyle, the five-year-old son of King’s Theatre was sent off 11/4 joint-favourite. He made good progress into third two furlongs out, and hit the front with over a furlong to go, keeping on well from there to score by five lengths.
Gordon Elliott said: “He’s very keen at home and, if he learns to settle, he could be a nice horse next year.
“He’ll go out for the summer now and is a nice horse to go jumping next season. He wouldn’t want the ground any quicker than that.”
Synopsos made it two from two for Ger Lyons after she got up to win the Knockcroghery Handicap under Gary Carroll for owner David Spratt.
Making her debut in handicap company , and stepped up to a mile and a half for the first time, she was ridden and switched to the outer over two furlongs out and hit the front in the closing stages to win by three parts of a length.