BEVERLY HILLS, United States: Keith Thurman vowed to retire Philippine boxing legend Manny Pacquiao on Wednesday (Thursday in Manila) as the two fighters traded verbal jabs ahead of the World Boxing Association battle for welterweight supremacy.

The undefeated Thurman, 30, takes on Pacquiao in Las Vegas on July 20 in a contest that pits the WBA’s “super world champion” against the body’s secondary “world” champion.