Windsor Park, Belfast - Former two division world champion Carl Frampton (26-1, 15 KOs) broke down, dropped and stopped previously undefeated Australian Olympian Luke Jackson (16-1, 7 KOs) in the ninth round. The victory saw Frampton retain the WBO interim-featherweight title.

Frampton was back in action in April, when he won a dominant twelve round unanimous decision over multi-division world champion Nonito Donaire.

Jackson, for his part, had a quick win at super featherweight in April, when he easily knocked out overmatched Surachet Tongmala in two rounds.

Promoter Frank Warren may now match Frampton against IBF world champion Josh Warrington before the end of the year.

Against Jackson, Frampton controlled the first two rounds with ease. In the third, he began to let his hands go and was starting to make Jackson feel the difference in power. Frampton was planting his feet more often in the fourth, and unloading with heavy punches. Jackson was still in the fight and landing a counter here and there.

Jackson was trying to do more in the fifth, which only spurred Frampton forward with bigger counters. Jackson's face was starting to show the damage, with a cut near his right eye, his nose was bleeding and his face was swelling on the right side. Jackson did a little better in the sixth, and showed a good chin when Frampton nailed him with a really big uppercut near the end of the round.

Frampton continued to dig to the body in the seventh. Jackson was game, and was taking chances by throwing punches with Frampton.

In the eight round, Frampton landed another big body shot and this time Jackson went down to his knees. Jackson made it up his feet and made it to the bell as Frampton tried to finish him off.

In the ninth, Frampton badly hurt Jackson to the body once again and was starting to unload with punches - and that prompted Jackson's corner to throw in the towel.