OAKLAND – Josh Willingham hit an RBI double and also scored on a throwing error, and the A's ended their winless streak against San Francisco ace Tim Lincecum with a 5-2 victory over the Giants on Friday night.Ben Margot Associated PressGiants pitching coach Dave Righetti talks with Tim Lincecum after the A's scored twice in the third inning Friday night in Oakland. Lincecum walked five and suffered his sixth loss of the season.