Undefeated World Boxing Organization (WBO) world champions ÓSCAR VALDEZ and GILBERTO "Zurdo" RAMIREZ will headline and exciting world championship event This Friday! September 22, at Tucson Arena (260 South Church Ave., Tucson, AZ 85701.) Photos by Mikey Williams.

Valdez (22-0, 19 KOs), a two-time Mexican Olympian with strong roots in Tucson, will be defending his WBO featherweight title against the WBO's No. 4 world-rated contender GENESIS SERVANIA (29-0, 12 KOs), of Bacolod City, Philippines.

WBO super middleweight champion Ramirez (35-0, 24 KOs), from Mazatlan Mexico, will take on No. 1 contender and mandatory challenger JESSE "Hard Work" HART (22-0, 18 KOs), of Philadelphia, PA, in the grudge match of the year. The four warriors boast a perfect combined record of 108-0 (73 KOs) with nearly 70% of their victories coming by way of knockout.

WEIGHTS

Valdez 125.8

Servania 125.4

Ramirez 167.8

Hart 167.6

The event will be further enhanced with the addition of Irish Olympic hero MICHAEL "MICK" CONLAN, 2016 U.S. Olympian MIKAELA MAYER and the battle for the vacant NABF welterweight title between EGIS KAVALIAUSKAS and MAHONRI MONTES. Conlan (3-0, 3 KOs) will rumble in six-round featherweight bout against Kenny Guzman (3-0, 1 KO), Kalispell, Montana, and Mayer (1-0, 1 KO) will take on Allison Martinez (1-2, 1 KO) from Spring, Texas, in a four-round lightweight bout.

Both world championship fights and Conlan’s six-round featherweight battle against Kenny Guzman (3-0, 1 KO), of Kalispell, Montana, will be televised live and exclusively at 10:30 p.m. EDT on ESPN and ESPN Deportes and stream live on the ESPN app. The entire card will be available via the ESPN app beginning at 7:30 p.m. ET / 4:30 p.m. PT.