The Philadelphia Phillies are 37-14 and lead the NL East by six games over the Atlanta Braves as they prepare to open a six-game trip Friday in Colorado. They are 21-8 at home and 17-3 in May. The Phillies opened with the best 50-game start in baseball since the 2001 Seattle Mariners, and they already have swept seven series, the most recent being a three-gamer over the World Series champion Texas Rangers. Phillies starters have pitched at least seven innings in 18 starts, the most in baseball.