Canterbury Park's Extreme Day promotion on Sunday drew 16,269 fans to watch several unusual contests. In the Battle of the Surfaces - which had fields of seven running simultaneously in 1 1/16-mile races on the main track and the turf - the first four finishers all raced on the grass, with Prospect Green rallying from last to prevail. Castor Troy won the main-track contest while finishing fifth overall. Derek Bell rode the winner for trainer Mac Robertson. In the Are We There Yet 2 1/16-mile endurance contest, Agent Danseur assumed command after the opening half-mile and was never headed, drawing off to prevail by 4 3/4 lengths. In the Blazing Saddles mixed-breed 770-yard contest, Thoroughbreds Icy Tobin and Timetobook drew away from their five rivals in a duel that saw Icy Tobin prevail by a half-length in a course-record 38.479 seconds for the distance. Wagering on the card, including out-of-state handle, totaled $809,106. There also were ostrich and camel races. Jockey Keith Davis demonstrated his avian riding skill and was the only rider to stay aboard an ostrich for a sixteenth of a mile. Trainer Troy Bethke guided his camel mount to a narrow victory over track chaplain Tommy Bartram later on the card.