Russell Martin drove a two-run, two-out single up the middle for the Dodgers' 10th walk-off win of the season, and Los Angeles swept the St. Louis Cardinals with a 2-1 victory Wednesday. Martin improbably delivered after a frustrating offensive day for the Dodgers, who have won five straight. Los Angeles couldn't score during seven brilliant innings of four-hit ball by Cardinals starter Jack Flaherty in his hometown ballpark, but the Dodgers still came through against St. Louis' bullpen.