Boxing’s busiest champion WBO Jr. Featherweight ruler Emanuel “Vaquero” Navarrete (30-1, 26 KOs) will make his fifth title defense in nine months against Jeo Santisima (19-2, 16 KOs) on Saturday’s Fury-Wilder PPV. 25-year-old Navarrete has won all his defenses so far by knockout (against Isaac Dogboe, Francisco de Vaca, Juan Miguel Elorde and Francisco Horta)

The Wilder vs. Fury II PPV begins at 9 p.m. ET/6 p.m. PT