Trey Lippe Morrison is the breathe of fresh air the heavyweight division in the world of boxing.

As he has from the start, promoter Tony Holden thinks the sky is the limit for Lippe Morrison, just as it was for his father Tommy “The Duke” Morrison.

Lippe Morrison picked up his 15th straight knockout win Saturday, June 30 when he finished off Bryon Polley at 7:21 into their scheduled 10-rounder that was part of “Title Night OKC” at Chesapeake Energy Arena.

“Trey has the heart that the heavyweight (division) needs: ‘you have to kill me to beat me,’” Holden said. “His dad had that. Trey inherited that. Is he ‘there’ yet? No, but he works hard and is learning. He just needs more sparring. We are going to get there.”

Tommy Morrison had knockouts in 42 of his 48 wins in a career that spanned 20 years.

“The Duke” won his first 11 bouts by knockout — a total of 16 rounds — then went the distance against Steve Zouski on June 25, 1989, in Atlantic City, New Jersey.

Morrison had a fourth-round knockdown against Zouski, but the Brockton, Massachusetts, fighter shook off the eight-count.

Trey Lippe Morrison, who had been able to spar only three times in the last six weeks due to a lack of heavyweight competition in his new training home of Tulsa, has 25 rounds under his belt in four years.

Lippe Morrison ranks 18th in the U.S., and 70th worldwide, according to boxrec.com.

“I know his heart,” Holden said. “He works hard, like Ivan Baranchyk. They work together well.

“This is out of our area, but they were all screaming for Trey.”

One would have thought the fight was being contested in Miami instead of Oklahoma City judging by the cheers of the crowd.

“I am getting better step-by-step,” Lippe Morrison said. “We are going to keep doing this. People are probably going to want to see me step up and they might be disappointed. That’s not what we are going to do. We are going to take it step by step and get better since I didn’t have an amateur career. I am going to get better.”

Holden anticipates at several more fights against foes like Polley, then will step up the level of competition.

“I can see it in about a year or year and a half if I stay healthy with no injuries, for sure,” Lippe Morrison said. “That will be six or seven more fights.”