Aztec Sense withstood a claim of foul Saturday to win his fourth straight race in the $100,000 Turning for Home, a starter handicap at Parx. He won by 3 1/2 lengths over Moon Gate Warrior.   The Turning for Home, a 1 1/16-mile race restricted to horses who had started for a claiming price of $16,000 or less in 2017 or 2018, was named for a Thoroughbred retirement program. All entry and start fees for the race were to be donated to Turning for Home. Aztec Sense ($3.40) stalked the pace through fractions of 24.01 seconds for the opening quarter, 48.83 for the half-mile, and 1:14.31 for six furlongs. Moon Gate Warrior moved to the lead from there, with Aztec Sense going after the rival, overtaking him at the top of the stretch, and going on to cover the distance on a track rated good in 1:47.53. Following the race, Josh Navarro, the rider of third-place finisher Ruby Bleu, claimed foul against the winner for alleged interference at the five-eighths pole, it was announced at Parx. The stewards disallowed the claim of foul and the result stood. Paco Lopez rode Aztec Sense for trainer Jorge Navarro. Aztec Sense is a son of Street Sense who races for Joseph Besecker. -additional reporting by Jim Dunleavy