Mamoose, the lone Kentucky-bred in the field of 10 juveniles, took the $79,818 Iowa Stallion Futurity on Saturday evening. Mamoose, one of six maidens who entered the starting gate, made a five wide rally in the stretch to swoop past pacesetting favorite Hot Frank Hank, who held on for second. The winning margin was 2 3/4 lengths.\nHot Frank Hank, the prohibitive 1-2 favorite, was off a beat slow but quickly recovered to assume command. However, once leading rider Terry Thompson angled Mamoose out for a clear run at the three-sixteenths marker, the eventual outcome appeared inevitable. He stopped the clock for the six furlongs in 1:12.09.\nMamoose, the pride and joy of trainer Brian White's small string, is a gelded son of Repriced who was bred and is owned by White and his wife, Catherine Whelan-White, a veteranarian. In two previous starts, he had finished fifth in maiden races at Churchill Downs and Ellis Park. Adding blinkers for his stakes debut, he made his trip to Prairie Meadows a profitable one when collecting $41,374 for his connections.\nSent off as third choice in the wagering, Mamoose paid $16.20 to win.