LAS VEGAS (September 8, 2015) – Exciting stars from the Mayweather Promotions stable of fighters will fill out the action-packed day of undercard bouts on Saturday, September 12 from the MGM Grand Garden Arena preceding the SHOWTIME PPV event HIGH STAKES: Floyd Mayweather vs. Andre Berto.

Featured undercard action pits Chris “Young King” Pearson (12-0, 9 KOs) against Janks Trotter (9-1-1, 9 KOs) in a 10-round middleweight bout, Ronald “The Thrill” Gavril (13-1, 9 KOs) as he takes on Scott “Cujo” Sigmon (25-7-1, 14 KOs) in 10-rounds of super middleweight action and Ashley “Treasure” Theophane who will face Steve Upsher (25-4-1, 6 KOs) in a 10-round junior welterweight attraction.

Further action will see undefeated 20-year-old prospect Gervonta Davis (11-0, 10 KOs) out of Baltimore taking on 23-year-old Mexican Guillermo Avila (14-4, 11 KOs) in an eight-round lightweight affair and the pro debut of Atlanta’s Trakwon Pettis against 22-year-old Devante Seay (0-0-1) of Martinsville, Virginia in a four-round super lightweight showdown.

Tickets for the live event, which is promoted by Mayweather Promotions LLC., are priced at $1,500, $1,000, $750, $500, $300 and $150 and are on sale now. Tickets are limited to eight (8) per household for all ticket prices except the $150 ticket category, which is limited to four (4) per household. To charge by phone or with a major credit card, call Ticketmaster at (800) 745-3000. Tickets also are available for purchase at www.mgmgrand.comor www.ticketmaster.com.

Born in Dayton, Ohio, Pearson has impressed with strong victories over Steve Martinez, Said El Harrak, Lanardo Tyner and previously unbeaten Acacio Joao Ferreira in his last four fights. The 24-year-old looks to further prove his contender status when he takes on the powerful Trotter out of Alberta, Canada. The 31-year-old is coming off of back-to-back knockout victories in 2014.

A power-punching Romanian fighting out of Las Vegas, Gavril returns to the ring looking for his third straight victory. He scored decision victories in his last two bouts over Jessie Nicklow and Oscar Riojas and also owns knockout victories over Jose Berrio, Thomas Falowo and Tyrell Hendrix. The 29-year-old will square-off against Lynchburg, Virginia’s Simon on September 12. The 28-year-old is coming off of a June stoppage of Jonathan Reid.

An experienced contender from London but fighting out of Las Vegas, Theophane is looking to build on his current five-fight win streak when he enters the ring on September 12. The 35-year-old has been in the ring with many 140 and 147-pound contenders including Danny Garcia and Pablo Cesar Cano, losing by narrow split-decision to both. He started his 2015 campaign with a victory over Mahonri Montes in April. He shares the ring with the 30-year-old Upsher who has challenged former world champions Andre Berto and Luis Collazo throughout his career. Fighting out of Philadelphia, he most recently defeated Alejandro Rodriguez in May and owns a victory over previously unbeaten Bayan Jargal.

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“HIGH STAKES: Mayweather vs. Berto,” a 12-round welterweight world championship bout for Mayweather’s WBC and WBA 147-pound titles, is promoted by Mayweather Promotions LLC.  The event will take place Saturday, September 12 at MGM Grand in Las Vegas and will be televised by SHOWTIME PPV.  The undercard features a WBO Junior Lightweight World Championship fight, which is a rematch between Roman Martinez and Orlando Salido.  Also featured on the PPV telecast will be a WBC Super Middleweight title bout between Badou Jack and George Groves, which is promoted in association with Team Sauerland. The opening PPV bout pits former world champion Jhonny Gonzalez against Puerto Rico’s Jonathan Oquendo in a 10-round super featherweight bout. SHOWTIME “Countdown Live” begins 6:30 p.m. ET/3:30 p.m. PT with a 10-round super welterweight showdown between Ishe Smith and Vanes Martirosyan.

For more information visit www.mayweatherpromotions.com, www.SHO.com/Sports andwww.mgmgrand.com and follow on Twitter at @floydmayweather, @AndreBerto, @BadouJack, @StGeorgeGroves, @Romancito77, @siri_salido, @jhonnygbox, @JonathanOquen @mayweatherpromo, @SHOSports and @Swanson_Comm or become a fan on Facebook at www.facebook.com/FloydMayweather,www.Facebook.com/TheRealAndreBerto,www.facebook.com/MayweatherPromotions and www.facebook.com/SHOsports.