Marco Scutaro delivered a key two-run double Tuesday and the San Francisco Giants snuffed out the Los Angeles Dodgers\' playoff hopes with a 4-3 victory. Clinging to a 2-1 lead in the fifth inning, the Giants put two runners abroad with two outs against Jamey Wright and Scutaro scorched a pitch down the right-field line, chasing home both runners to double the advantage. Buster Posey launched a solo homer and Joaquin Arias added an RBI for the National League West champs, who evened their season-ending three-game series. Barry Zito (15-8) earned the win, yielding a pair of runs on six hits over six frames. Sergio Romo tossed a scoreless ninth for his 14th save. Chris Capuano (12-12), absorbed the loss for Los Angeles, which fell short in its pursuit of the St. Louis Cardinals for the second and final NL wild card berth. A.J. Ellis slammed a two-run homer for Los Angeles.