Novogratz Racing Stable LLC's Munnings Challenge (c, 3, Munnings--Amy's Challenge, by Artie Schiller) pulled away from his rivals in the final furlong of a six-furlong maiden Saturday at Oaklawn, improving on a debut runner-up effort to become the afternoon's second 'TDN Rising Star' presented by Hagyard. The 2-5 jolly nearly beat the bell from the outside stall, exhibiting his dam's speedy tendencies, but he switched off nicely enough in transit to rate in a three-wide third down the back of the track, with the opening quarter posted in a strong...