C R K Stable's Skinner (Curlin), second as the favorite as a 3-year-old in last year's GIII Native Diver Stakes, went one better in Saturday's renewal in a breakthrough performance. The $40,000 Keeneland September yearling turned $510,000 OBS April breezer (:10 1/5) had made only one start since, finishing a very useful second sprinting in an optional claimer on the Breeders' Cup Friday undercard. Last of six beneath Hector Berrios through an opening quarter in :23.15 here, the 7-2 chance was up a spot in a well-placed fifth through a...