MIAMI — Patience paid off for Antoine Douglas during his win over Juan De Angel to get a knockout and a championship belt.

Douglas, of Washington, D.C., knocked out De Angel of Barranquilla, Columbia, at 2:46 of the fourth round to claim the WBC FECARBOX middleweight title and the vacant WBA-NABA middleweight crown.

“I mainly just took my time,” Douglas said. “I tried to be more mature and take my time because I had more rounds to go.”

The win was the 22nd in 24 professional fights for Douglas and it was his 16th by knockout.

“I was really just using my distance and my jab because we knew he was weak to the body,” Douglas said. “Once I started landing (punches), I hurt him with a jab to the body. Then I thought ‘OK, it’s time.’”

He used a right hook to the ribs to finish off De Angel.

He wouldn’t call the win his biggest yet, but “It puts me in the rankings. It solidifies where I need to be. Me and my team will go back to the drawing board and keep on climbing.”

Douglas hopes that the win means a shot at a fight on Showtime Championship Boxing.

“That would be the big leagues,” he said.

Friday’s fight wasn’t part of the “ShoBox” telecast.

“Every win feels good, especially when you are climbing that ladder,” Douglas said. “You don’t want to take two steps back. As long as I am taking steps forward and I am winning, I am very satisfied.”