Arrogate © Del Mar Thoroughbred Club

North America's richest horse, Arrogate, goes through a half-mile drill Tuesday morning at Del Mar in :47.20 with Martin Garcia up. The husky gray, who was turning in his first work since running fourth in the TVG San Diego Handicap July 22, went alone from the half-mile pole with an early split of :24 and a gallop out of 1:00.20.