Athletics on the mound: A's starter Rich Harden continued his dominant spring by holding the Giants to one run on two hits over four innings. Jay Marshall was charged with an unearned run after an outside pitch from fellow reliever Mike Mitchell got by Jason Kendall and allowed Durham to score.
Giants on the mound:
San Francisco starter Matt Cain left after 48 pitches and two innings of work. He gave up one run on two hits and walked two. The Giants bullpen showed improvement, with Jonathan Sanchez, Kevin Correia, Vinnie Chulk, Jack Taschner, Brad Hennessey and Armando Benitez holding the A's scoreless.
Athletics 15-12-1; Giants 15-16-1.
The Giants host the Athletics on Saturday at 1:05 p.m. PT at AT&T Park. Oakland right-hander Esteban Loaiza, who was bumped on Thursday because of tightness in his back, is scheduled to throw against San Francisco's Matt Morris.
Ryan Quinn is a contributor to MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.