Mayweather-Berto Press Conference last August
Aug 6, 2015; Los Angeles, CA, USA; Andre Berto speaks to the media as Floyd Mayweather, Jr. listens during a press conference to announce the upcoming fight on September 12, 2015 at J.W. Marriott LA Live. Reuters/Jayne Kamin-Oncea-USA TODAY Sports

Boxing fans, critics and the betting odds are not giving Andre Berto much of a chance against Floyd Mayweather Jr. on Saturday but the underdog believes he has a legit shot of pulling off the upset victory over the favoured and undefeated American, who is considered the best pound-for-pound fighter in the world.

Berto promised that he’s focused in the fight against Mayweather Jr. and not the critics who thinks his opponent picked an easy fight.

"The critics talking that way, they're not in the gym training with us. They do something completely different than what we do. We're fighters and we're able to do things that these critics can't do, so I don't get affected by the critics,” Berto said to Ben Thompson of FightHype.com.

"At the end of the day, this right here is a huge opportunity for me. I don't want to get caught up and caught off guard just by all the extra stuff or the media. I'm dialed in and I'm on a mission. The whole team's just focused on one thing."

Berto (33-3-0, 23 knockouts) has lost three of his last six bouts while Mayweather Jr. (48-0-0, 26 knockouts) is coming off a unanimous decision victory over Manny Pacquiao last May. Mayweather Jr. has stated that the bout against Berto will be his farewell fight for his career.

The Mayweather-Berto betting odds also heavily favour the undefeated American with most sportsbooks putting Mayweather as a 35-to-1 favourite—which means a bettor need to wager $3,500 to win $100 if they bet on Mayweather. Conversely, a $100 bet on Berto will earn $1,200 as the 12-to-1 underdog.

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