Two undefeated pitchers in July put their winning streaks on the line Wednesday afternoon when the San Francisco Giants attempt to close out a three-game sweep of the visiting Chicago Cubs. The Giants have won the first two games of the series by identical 5-4 scores, needing 13 innings on Tuesday to record the 10th win in the past 11 games. Five of those 10 wins came in extra innings, all in the past eight days.