Barclays Center, Brooklyn - In the co-featured event of SHOWTIME CHAMPIONSHIP BOXING, consensus top-10 welterweight Yordenis Ugas (23-3, 11 KOs) out boxed Argentina's Cesar Miguel Barrionuevo (34-4-2, 24 KOs) on his way to a dominating unanimous decision victory (119-109, 120-108, 120-108).

With the win in the WBC title eliminator, Ugas earns the WBC's second mandatory position to fight Shawn Porter, who in the main event had defeated Danny Garcia for the vacant title.

In a tactical performance, Ugas dictated the pace from the opening bell and looked comfortable throughout the 12 rounds. He was the more effective fighter from the outset, landing 55 percent of his power punches and 35 percent of his total punches. Barrionuevo, who was facing a big step-up in competition, was never able to trouble the former Olympic bronze medalist out of Cuba, despite throwing more punches.

Barrionuevo connected on just 26 percent of his power punches and 19 percent of his total punches. Ugas was the far more accurate puncher connecting on 55 percent of his power punches and 35 percent of his total punches, including a wild multi-punch assault on Barrionuevo in the eighth round.

"We won today and I think I showed everybody my talent," said Ugas, who improves to 8-0 at 147 pounds. "I'm happy with my performance. I showed enough, now I'm ready for a championship fight. I want Shawn Porter. I'm here to compete with the top-level guys in the sport."

"I just didn't have the right distance tonight," said Barrionuevo, who was making his U.S. debut. "It was hard to catch him and attack. He countered well and attacked the body. I showed my heart but he was the better fighter tonight."

In the telecast opener, heavyweight slugger Adam Kownacki (18-0, 14 KOs) remained undefeated by scoring a unanimous decision victory over former world champion Charles Martin (25-2-1, 23 KOs) in a sensational action-packed fight. Each of the judges scored the fight 96-94 in favor of the hometown favorite Kownacki, who was fighting in front of a boisterous contingent of Polish fans.