WinStar Farm homebred Impulse Buy (f, 2, Speightstown--Jojo Warrior, by Pioneerof the Nile), a debut second behind her Rodolphe Brisset-trained stablemate Liam in the Dust (Liam's Map) at Ellis Park Aug. 11, graduated in style with a 'TDN Rising Star' performance at second asking at Keeneland Saturday. The 5-2 chance shot out to the front and sped through an opening quarter in :22.11. She traveled nicely around the far turn, kicked for home as the one to catch and dropped the hammer from there to win by an eye-catching 11...