Roy Halladay put the finishing touches on the Phillies’ fourth consecutive National League East crown and perhaps his own Cy Young Award. Halladay tossed a complete game two-hitter for his 21st victory in an 8-0 win against the Nationals in rainy DC on Monday. The two-time defending NL champions had already clinched a postseason spot, but sealed their dominance atop the division. Halladay was dominant all night, facing the minimum through seven innings, and finishing with six strikeouts and no walks. He leads the majors in wins, innings, complete games and shutouts. Philadelphia improved to 20-5 in September and became just the third team in NL history to make at least four consecutive playoff appearances. The Phillies defeated the Tampa Bay Rays to win the 2008 World Series, but lost to the Yankees in last year’s Fall Classic. Halladay previously won the Cy Young Award back in 2003 with the Toronto Blue Jays.