WATCH LIVE: Valdez vs Conceicao on ESPN+ & FITE

WBC super featherweight world champion Oscar Valdez authored a title-winning knockout for the ages in February over Miguel Berchelt. For his encore — and the first defense of his title — the undefeated two-time Mexican Olympian will make his desert homecoming.

Valdez (29-0, 23 KOs) will look to make it 30 for 30 against undefeated 2016 Brazilian Olympic gold medalist Robson Conceição on Friday, Sept. 10 from the AVA Amphitheater at Casino Del Sol in Tucson, Arizona.

WATCH LIVE: Valdez vs Conceicao on ESPN+ & FITE

A native of Nogales, Mexico, Valdez moved to Tucson as a young child and spent his elementary school years there before returning to Mexico.

In the 10-round co-feature, undefeated junior lightweight star Gabriel Flores Jr., from Stockton, California, will fight Mexican veteran Luis Alberto Lopez. Valdez-Conceição and Flores Jr.-Lopez will stream live and exclusively on ESPN+ at 10 p.m. ET/7 p.m. PT.

Promoted by Top Rank, tickets starting at $25 go on sale Tuesday, July 27 at 10 a.m. MST and can be purchased by visiting

“Oscar Valdez is coming off a career-best performance and wants to put on a spectacular showing in front of the great Tucson fans,” said Top Rank chairman Bob Arum. “Conceição has been waiting for this shot ever since he turned pro, and having promoted him for his entire career, I know he’ll be at his very best. We have a great co-feature, as the young Flores wants to prove he is a contender to watch, and he can do that by beating a tough Mexican in Luis Alberto Lopez.”

Valdez cemented his status as one of the faces of Mexican boxing with his 10th-round knockout over longtime champion Berchelt. He is 8-0 in world title fights, including six defenses of the WBO featherweight world title he won in July 2016. Valdez and Conceição fought as amateurs in the gold medal match of the 2009 Pan American Games, with Conceição prevailing by a single point. Valdez turned pro nearly four years before Conceição (16-0, 8 KOs), who made history as the first Brazilian boxer to capture Olympic gold. A native of Bahia, Conceição made his pro debut in November 2016 on the Manny Pacquiao-Jessie Vargas undercard and knocked out four of his first five foes. Last October, he survived an early knockdown to edge Louie Coria by unanimous decision. He last fought April 10 in Tulsa and knocked out Jesus Antonio Ahumada in the seventh round.

“I am very excited to fight in my second home, Tucson, Arizona, where I will have my first defense of the WBC super featherweight world title,” Valdez said. “It motivates me to know that I will defend the title in front of my friends and my family, and I will be willing to put it on the line as in all my fights. I’m coming to give a great show to my people, and I can’t wait to see you on Sept. 10.”

Conceição said, “I’ve been waiting my whole life for this opportunity, and that’s why I’m training with great determination. I will represent my family and Brazil. I already won a gold medal for my country and now I will bring home a world title. With great determination, I will deliver a great performance. It will be a true spectacle!”

Flores (20-0, 7 KOs) made history in 2017 when, at 16 years old, he became the youngest fighter ever to sign a promotional contract with Top Rank. He went 3-0 in 2020, including a shutout decision over Matt Conway on the Deontay Wilder vs. Tyson Fury II undercard. Flores performed three times inside the MGM Grand Las Vegas Bubble, punctuated by a sixth-round stoppage over former world title challenger Jayson Velez in February. Lopez (22-2, 12 KOs), from Mexicali, Mexico, has won five straight bouts since a 2019 decision loss to Ruben Villa. He notched his signature win last July with a split decision over Andy Vences.

“This is the next step in my journey towards a world title, and I will convincingly defeat Lopez,” Flores said. “I’m going to prove once again that I’m ready for the next level.”

Lopez said, “I appreciate matchmaker Brad Goodman and Top Rank for the opportunity to fight Gabriel Flores Jr. I know he’ll be prepared to give everything on Sept. 10, but so am I, and I guarantee nothing but my very best. I’m a man of few words, and I’ll let my actions do the talking inside the ring.”

The undercard, streaming live and exclusively on ESPN+, will feature Japan’s undefeated WBO flyweight world champion Junto Nakatani (21-0, 16 KOs) defending his title against Puerto Rican former world champion Angel “Tito” Acosta (22-2, 21 KOs). Nakatani, who has never fought outside of Japan, knocked out Filipino contender Giemel Magramo in eight rounds last November to win the vacant world title. A former Japanese flyweight champion, Nakatani has won four straight bouts by stoppage. Acosta, who made three successful defenses of the WBO light flyweight crown, has won two fights since a debated 12th-round stoppage at the hands of Elwin Soto. Acosta was leading on all three scorecards when he was stopped on his feet early in the round.

Also scheduled to appear in eight-round bouts: 2016 Mexican Olympian and junior welterweight prospect Lindolfo Delgado (12-0, 11 KOs), rising junior lightweight René Telléz Girón (15-1, 9 KOs) and Mexican junior welterweight knockout artist Omar Aguilar (21-0, 20 KOs).

FRIDAY: Xander Zayas-Jose Luis Sanchez & Raymond Muratalla-Jose Angulo Added to Oscar Valdez-Robson Conceição Bill in Tucson

Puerto Rico’s next superstar hopes to break through with a statement-making performance under the desert sun. Xander Zayas, the 19-year-old puncher from San Juan, will step up in class when he meets Jose Luis Sanchez in a six-round junior middleweight bout this Friday, Sept. 10 at the AVA Amphitheater at Casino Del Sol in Tucson, Arizona.

Zayas-Sanchez and an eight-round lightweight battle between the unbeaten Raymond “Danger” Muratalla and Ecuador’s Jose Angulo will be part of the undercard of Oscar Valdez’s WBC super featherweight world title defense against unbeaten Brazilian Robson Conceição.

The undercard, which also includes WBO flyweight world champion Junto Nakatani’s title defense against Angel “Tito” Acosta, will stream live and exclusively on ESPN+ at 5:30 p.m. ET/2:30 p.m. PT. ESPN+ will also stream Valdez-Conceição and a 10-round junior lightweight showdown between Gabriel Flores Jr. and Luis Alberto Lopez starting at 10 p.m. ET/7 p.m. PT.

Promoted by Top Rank, limited tickets priced at $25 are on sale now and can be purchased by visiting

Zayas (9-0, 7 KOs) has emerged as one of the sport’s top prospects since debuting as a 17-year-old in October 2019. He fought four times in 2020 and has already fought three times in 2021. He shut out James Martin over six rounds in February, blasted out Demarcus Layton in 56 seconds in April, and followed that up with a third-round demolition over Irish veteran Larry Fryers in June. The Fryers fight was Zayas’ welterweight finale, as he’s testing the junior middleweight waters versus Albuquerque native Sanchez (11-1-1, 4 KOs), who is coming off a draw in May against respected spoiler Adrian Granados. Sanchez has not lost since 2013.

Muratalla (12-0, 10 KOs), a Robert Garcia-trained Southern California native, has notched seven consecutive knockout wins. The 24-year-old shined a pair of times last year inside the MGM Grand Las Vegas Bubble and stood out in May on the Josh Taylor-Jose Ramirez undercard with a fifth-round knockout over 30-fight veteran Jose Gallegos. Angulo (14-2, 7 KOs) has won two straight fights since a majority decision defeat to then-unbeaten prospect Alejandro Guerrero.

In other undercard action on ESPN+:

  • 2016 Mexican Olympian Lindolfo Delgado (12-0, 11 KOs), who made his Top Rank debut June 19 with a unanimous decision over Salvador Briceno, returns against Miguel Zamudio (45-16-1, 28 KOs) in an eight-rounder at junior welterweight.
  • René Telléz Girón (15-1, 9 KOs), who owns a December 2019 knockout victory over top prospect Karlos Balderas, will face Texas native Eduardo Garza (15-4-1, 8 KOs) in an eight-rounder at junior lightweight. Giron has fought once since the Balderas triumph, knocking out Guadalupe Acosta Rodriguez last November in seven rounds.
  • Mexican junior welterweight knockout artist Omar “Pollo” Aguilar (21-0, 20 KOs) will step up in class against Paraguay’s Carlos Manuel Portillo (22-3, 17 KOs) in an eight-rounder. Aguilar has 15 first-round knockouts on his ledger and has not been extended past three rounds since December 2018.
  • Tucson’s Jose “Fosforito” Ramirez will make his official pro debut against fellow Arizona native Miguel Ceballos (2-0, 2 KOs) in a four-rounder at junior featherweight.