POMONA, Calif. - Warren's Whistle, a three-time stakes winner at Fairplex Park, will gun for her fourth Fairplex stakes on Friday when she wheels back in the $100,000 Las Madrinas Handicap. Warren's Whistle won the $50,000 Pio Pico Stakes for the second straight year last Friday, rallying inside to defeat longshot pacesetter Always the Lady by three-quarters of a length. Warren's Whistle, who also won the 2000 Black Swan Stakes at Fairplex, will stretch out from 6 1/2 furlongs to 1 1/16 miles for the Las Madrinas.