By Chris Williams: Former WBO light welterweight champion Mike ‘Mile High’ Alvarez (38-4,26 KOs) will be fighting journeyman Martin Angel Martinez (18-14-1, 11 KOs) on June 30 on the undercard of WBO super middleweight champion Gilberto ‘Zurdo’ Ramirez vs. Roamer Alexis Angulo on ESPN on Top Rank Boxing at the Chesapeake Energy Arena in Oklahoma City, Oklahoma. The televised portion of the card will be shown on ESPN at 9:00 p.m. ET. The fight card will be shown on ESPN+ at 6:00 p.m. ET.