There will be a pick three wager offered on the major Kentucky Derby prep races being run on Saturday. Called the Big 3 Pick 3, the bet, with a base wager of $3 and a 19 percent takeout, will be offered on the Grade 2 Wood Memorial from Aqueduct, the Grade 1 Blue Grass Stakes from Keeneland, and the Grade 1 Santa Anita Derby from Santa Anita. The fields for the Wood and Santa Anita Derby were to be drawn Wednesday. The field for the Blue Grass was to be drawn Tuesday. A field of 13, led by Grade 3 Gotham winner Deterministic, Grade 3 Withers winner Uncle Heavy, and the unbeaten Tuscan Sky, is expected for the Wood. Graded stakes winners Sierra Leone and Dornoch are expected to head a field of 10 or more for the Blue Grass. The Bob Baffert-trained duo of Imagination and Maymun, as well as Sunland Park Derby winner Stronghold, are expected for the Santa Anita Derby. :: Want to learn more about handicapping and wagering? Check out DRF's Handicapping 101 and Wagering 101 pages.