Impressive win casts aside doubts about Manny Pacquiao's boxing future

Overwhelming display against Brandon Rios after a knockout loss to Juan Manuel Marquez nearly a year ago shows that Pacquiao is hardly finished in the sport.In the last major fight Bob Arum promoted in the Far East, he walked out of a Philippines arena to a burning sun, mourning the destruction Muhammad Ali and Joe Frazier delivered to each other in their third bout, the "Thrilla in Manila" in 1975.