Bryan Altman, CBS Local Sports

In just a few days, Floyd Mayweather will take to the ring for one last time to defend his Welterweight title against Andre Berto on Sept. 12 at the MGM Grand in Las Vegas. After this fight is over, we will either see Mayweather match the legendary 49-0 mark set by Rocky Marciano, or, see the upset of the century if Berto can pull out the victory and put a single blemish on Floyd’s currently untarnished record.

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In advance of the fight, we’ve lined up three very special guests who are heavily involved in the upcoming bout to answer your questions on our CBS Local Sports Mayweather-Berto Live Blog.

Click Here For More Mayweather-Berto Fight Coverage

On Wednesday, Sept. 9, we spoke with Hall of Fame ring announcer Al Bernstein, and you can find his live blog Q&A in full here. Tomorrow, we have Showtime Sports and NFL Network writer Mark Kriegel stopping by to answer all of your questions about Mayweather-Berto and beyond.

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Starting on Thursday, Sept. 10 at 12:15 p.m., Kriegel will be available to answer any and all questions you might have.

The floor is already open so head over to the CBS Local Sports Mayweather-Berto Live Blog and click the “comment” button to ask Mark your questions and he will answer the very best ones.

Stay tuned to the live blog as well for all of our Mayweather-Berto coverage and to see who our third and final guest will be on Friday, Sept. 11 the day before the fight.

Bryan Altman is, for some reason, an unabashed fan of the Rangers, Jets and Mets. If he absolutely had to pick a basketball team it would be the Knicks, but he’d gladly trade them for just one championship for either of his other three teams.

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Questions or comments? Feel free to follow Bryan on Twitter or send him an email