By Lem Satterfield

LAS VEGAS-- A limitless energy level is among the reasons that trainer Freddie Roach believes his eight-division champion, Manny Pacquiao, will be able to overwhelm and defeat Shane Mosley on Saturday night in defense of his WBO welterweight belt at the MGM Grand Hotel.

Part of Roach's strategy calls for the 32-year-old Pacquiao (52-3-2, 38 knockouts) to simply wear down the 39-year-old Mosley (46-6-1, 39 KOs) and to stop him within the scheduled 12 rounds of their clash.