Mayweather vs. Berto weigh-in live stream: Time, TV schedule and how to watch online

Floyd Mayweather faces Andre Berto Saturday night on Showtime pay-per-view, but before they get in the ring, the two welterweights step on the scales Friday at the MGM Grand in Las Vegas. You can watch that event right here on SB Nation.

Mayweather (48-0, 26 KO) claims he’s fighting for the final time against Berto (30-3, 23 KO), a massive underdog. Few, if any, expect him to challenge Floyd, let alone become the first man to defeat him. At 38, Mayweather says he’s retiring to look out for his own health, but many remain skeptical, particularly because he’s retired before.

The undercard will feature some much more evenly matched fights, including a super middleweight title bout between Badou Jack and George Groves, a super featherweight title rematch between Rocky Martinez and Orlando Salido, a junior middleweight clash between contenders Vanes Martirosyan and Ishe Smith, and a featherweight fight pitting Jhonny Gonzalez against Jonathan Oquendo in a Mexico vs Puerto Rico matchup.

Showtime Sports will be streaming the weigh-in event, which will also include the undercard fights, and you can watch here at SB Nation at 6 p.m. ET / 3 p.m. PT. It will also be shown live on Showtime, starting at 6 p.m.