Shawn Porter dethroned International Boxing Federation champ Devon Alexander late on Saturday, winning the world welterweight title with a 12-round unanimous decision. Porter kept his undefeated record intact, improving to 23-0-1 as he took the fight to Alexander to win on scores of 115-113 116-112 116-112.

"We worked hard and it came through in the ring," Porter said. "We made it look easy."

The 26-year-old Porter connected on several hard shots in rounds three and four against the fellow American, and impressed the judges with his consistent work ethic. Porter was making the first title shot of his career at the Barclays Center arena. Alexander won the IBF title by beating Randall Bailey in a 12-round bout on October 2012.

Alexander said he lost his focus and couldn't take advantage of Porter's weaknesses.

"I am disappointed," Alexander said. "I didn't follow the game plan as much as I should have. He was rushing in and I didn't capitalize on that."