Timothy Bradley (33-1-1, 13 KOs) has vacated his WBO welterweight title.
The WBO ordered the American to defend his belt against mandatory challenger Sadam Ali, but Bradley instead opted to fight Manny Pacquiao for a third time and relinquish the title.
Ali will now face former WBA light welterweight champion Jessie Vargas for the vacant title on March 5.
Vargas previously challenged for the WBO belt, losing on points to Bradley last June.
Bradley and Pacquiao, who will fight on April 9 in a…