Tonight at 8:00 p.m. ET on Showtime pay-per-view, Floyd "Money" Mayweather Jr. (48-0, 26 KO) will fight Andre Berto (30-3, 23 KO) for the WBC and WBA welterweight titles. Live stream the matchup online by clicking this link.

Mayweather has billed this bout as the last of his Hall of Fame career. A victory will push his record to 49-0, tying the record of former heavyweight champion Rocky Marciano. It's hard to imagine Mayweather wouldn't get in the ring one more time so he can have a chance to break that mark, but he's insisting this is it.

Joe Cortez Doesn't Believe Mayweather Will Stop After Saturday

"I'm ready to hang it up and spend time with my children," Mayweather said. "Most fighters that are retired didn't have a choice."

Berto, meanwhile, is fighting to prove he even deserves this spotlight. When he was announced as Mayweather's opponent, most scoffed at the soft matchmaking on Mayweather's part. Berto is a former welterweight champion, but he's lost three of his last six fights.

"Anybody that knows me has seen great things but at the same time they've seen me go through some real trials. What comes with that is a lot of hard work and perseverance. I felt like I went through what I went through for a reason. My time is now," Berto said.

Berto has promised to make the fight more entertaining than Mayweather's May 2 unanimous decision win over Manny Pacquiao. He believes he is physically more gifted than Pacquiao, and will disrupt Mayweather's defensive mastery.

"I think it's been a while since Floyd has fought somebody else with great speed and power like me - it's a rare combination and I feel I can probably offset a lot of things that he's doing. I'm really looking forward to interrupting anything that he's trying to do in the ring."

Prediction: Mayweather def. Berto by TKO (Round 11)

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