Don’t call Floyd Mayweather’s latest fight a comeback. The boxing legend revealed Monday he remains retired from the sport and has no intention of making a professional comeback. He said as much following his win over kickboxing sensation Tenshin Nasukawa via first-round knock-out in an exhibition fight in Saitama, Japan. “We are both still undefeated,” Mayweather said, per The Mirror’s Jake Polden. “He is a great champion and a great fighter. I am still retired, I don’t look to come back to boxing. I came back for entertainment for the people of Japan.” Mayweather, 41, expanded on his enduring retirement plans during a post-figh... NESN.com