Fans flocked to Parx Racing for the signature card of the year Saturday, featuring the $1 million, Grade 1 Pennsylvania Derby and the $1 million, Grade 1 Cotillion Stakes for 3-year-old fillies, a Challenge Series “Win and You’re In” qualifying race for the Longines Breeders’ Cup Distaff. America’s Best Racing’s Penelope Miller was on hand at the Bensalem, Pa. racetrack to highlight the atmosphere and action at Parx.