By Wilton Jackson,Joy Russo The dominant horse earned his sixth consecutive win Saturday. If anyone had any doubts around Flightline’s dominance, they were given quite a reminder in Saturday’s Breeders’ Cup Classic. The 4-year-old bay colt flipped his usual switch around the turn, pulling away from Life is Good as he entered the final stretch to win the Classic and improve to 6-0 over his career. Flightline outlasted a field of seven challengers in the 39th edition of the classic that included winning by an estimated 8-1/4 lengths over second-place Olympiad to win $6 million at Keeneland Race …