Manny Pacquiao knocked out Lucas Matthysse in the seventh round for the WBA "regular" world welterweight title at the Axiata Arena in Kuala Lumpur on Saturday. Pacquiao, 39, showed there is life in him yet. This win -- his first knockout since stopping Miguel Cotto in November 2009 -- has silenced arguments that he is on the slide after losing to Jeff Horn a year ago.