James DeGale successfully defended his IBF super middleweight title against the brave challenge of Rogelio Medina, but he needed points to do it in Washington.
The Brit was in control for the majority of 12 rounds but ultimately failed in his pre-fight promise of a knockout, instead taking victory on a unanimous decision, with a 115-113 and two 117-111 cards.
It looked like it would be a short evening's work for DeGale after some dazzling early rounds but the Mexican Medina showed incredible durability to stay in the bout, taking punishment throughout.
He improved as it went on, and briefly flirted with the idea of causing an upset as DeGale failed to get the job done, though the judges eventually scored heavily in the champion's favour.
DeGale extends his winning record to 23-1 and held up his part of the bargain ahead of a potential unification fight with WBC champion Badou Jack.
"He's a very tough fighter, he has obviously got a lot stronger and better over the last year and a half," DeGale told Sky Sports 2. "But skills pay the bills.
"I'm a bit disappointed. I should be taking out people like Medina, that's no disrespect to him. But I'm still learning.
"But the main thing is I am still champ. I've got to work on things still."