Las Vegas ,Nevada --- (L-R)  Former World Lightweight champion Brandon Rios of Oxnard,Ca. and one-time interim world champion Diego Chaves of Buenos Aires weigh in ( Rios 147 lbs, Chaves 148 lbs) for their upcoming 10-round welterweight main event , Saturday, August 2 in the Chelsea at The Cosmopolitan of Las Vegas and televised on HBO Boxing After Dark®. Promoted by Top Rank®, in association with Tecate, tickets to the Rios vs. Chaves / Vargas vs. Novikov world championship event are available for purchase at www.cosmopolitanlasvegas.com or through Ticketmaster at (800) 745-3000 and www.ticketmaster.com . Tickets are priced at $50, $75, $100, $150 and $200.  Photos by Chris Farina/Top Rank.

(L-R) Undefeated (24-0) WBA Jr. Welterweight champion Jessie Vargas, the "Pride of Las Vegas" and  undefeated (28-0) Anton Novikov from Chelyabinsk, Russia weigh in (Vargas 140 lbs , Novikov 139.4 lbs) for their upcoming title fight.

(L-R) Jose Ramirez and Alfred Romero  weigh in (Ramirez   142.4 lbs , Romero 138.2 lbs) for their upcoming feature  fight.