MACAU - Manny Pacquiao defeated Brandon Rios by unanimous decision on Sunday to take the WBO international welterweight title and return to his winning ways after consecutive losses. Returning to the ring after almost a year's absence, Pacquiao wore Rios down with his trademark combination punching and won 120-108, 119-109 and 118-110 on the scorecards at The Venetian casino in Macau.