Keith "One Time" Thurman will be looking to score a knockout victory on Saturday, July 20, when he defends the WBA welterweight crown against Manny Pacquaio. Thurman vs. Pacquiao is the main event of a Premier Boxing Champions on FOX Sports Pay-Per-View event from the MGM Grand Garden Arena in Las Vegas. Pacquiao (61-7-2, 39 KOs) fought at the venue back in January, when he dominated four division world champion Adrien Broner over twelve rounds to secure a lopsided unanimous decision win. Also in January, Thurman had some struggles to win a twelve round majority decision over Josesito Lopez. That bout ended a 22-month ring absence. Prior to that bout, Thurman (29-0, 22 KOs), 30, picked up a split-decision win over two-division title winner Danny "Swift" Garcia in March 2017. Thurman believes Pacquiao, now 40-years-old, is at the end of the road. "Does Manny belong in the ring with a fighter in his prime? Is Keith Thurman still Keith 'One Time...