Score and situation: The San Francisco Giants moved one step closer to a second world championship in three years with their 2-0 victory over the Detroit Tigers on Saturday night. They have now won six games in a row overall and hold a commanding 3-0 series lead with a chance to sweep on Sunday. Leading lads: Ryan Vogelsong would be the first to tell you this wasn't his sharpest outing, but it still added up to 5 2/3 innings of scoreless baseball and his third victory this postseason. Vogelsong allowed five hits and walked four on 104 pitches, but mixed in three strikeouts, two double plays and forced Miguel Cabrera to popup with the bases loaded to keep Detroit off the scoreboard. He then gave way to Tim Lincecum, who pitched out of a small jam in the sixth and then breezed through more innings to bridge the gap to closer Sergio Romo.