Clayton Kershaw became the majors' first 20-game winner and A.J. Ellis hit a pair of two-run homers, leading the Los Angeles Dodgers to a 14-5 victory over the Chicago Cubs on Friday. Kershaw (20-3) pitched five shaky innings in his shortest start in 3 1/2 months, but the NL West-leading Dodgers roughed up Edwin Jackson on their way to a 13-hit attack that included four homers. Matt Kemp hit a three-run shot in Los Angeles' six-run first, and Yasiel Puig added another three-run homer in the sixth. The Dodgers improved baseball's best road record to 48-31 and will clinch a postseason berth if Milwaukee loses in Pittsburgh on Friday night.