Tonight at 9:00 p.m. ET on ESPN, Premier Boxing Champions will put on it's first card on the Worldwide Leader with Keith "One-Time" Thurman facing Luis Collazo in the main event, which can be live streamed free here by clicking this link.

Thurman, a knockout artist who has stopped 21 of his 25 opponents, is heavily favored to defeat Collazo but the Brooklyn-born veteran may not be as much of a pushover as some expect. Collazo owns a 2014 knockout victory of Victor Ortiz, and has gone the distance with the likes of Amir Khan, Andre Berto, Shane Mosley and Ricky Hatton.

"I've been counted out all my life. The other day I was listening to Muhammad Ali. They counted him out when he was fighting George Foreman. He knew everyone was going against him. He said it. 'I know ya'll going against me.' That's the attitude I got. My talking, I do it in the ring," Collazo said.

"I'm trying to pull off the upset again. Anything can happen in this sport. One punch can end everything, so we'll see what happens on Saturday."

Meanwhile much of the talk around Thurman ahead of this bout centers on pound-for-pound king Floyd Mayweather Jr., and whether Thurman is in the running after this fight. Thurman has said if he gets a quick knockout he can be ready for a September 12 fight, but insists his focus is on Collazo.

"Collazo is a solid fighter, with a great resume and he has something to prove," Thurman said. "He's trying to take my title home and I believe him. A hungry man is a dangerous man."

Prediction: Thurman def. Collazo by KO (Round 6)