Kentucky Derby Odds Jenny Wiley Stakes Draws Top Turf Fillies and Mares for $650K Showdown   The Grade 1, $650,000 Jenny Wiley Stakes will take center stage at Keeneland on April 12, with a talented field of nine older fillies and mares competing over 1 1/16 miles on turf.  While this race doesn't offer points for Kentucky Derby Prep Races, its timing and location often put it in the spotlight alongside major spring cards, generating strong interest from fans and Kentucky Derby betting markets.