Fit Performer beat Drexel Monorail by 4 1/4 lengths Thursday in the $81,600 Interborough Handicap at Aqueduct. Fit Performer, ridden by Julian Pimentel, covered six furlongs on a fast track in 1:10 3/5 whiule carrying 112 pounds. She paid $13.20, $6.40 and $3.90 in the race for fillies and mares. A seven-year-old Fit To Fight mare, Fit Performer pressed pacesetter Go Go Baby Go from the inside through fractions of :22 3/5 in the opening quarter and :46 2/5 for the half. When jockey Pimentel asked, Fit Performer surged and quickly put the issue to rest before a crowd of 15,341.She also gave Pimentel his fourth winner of the afternoon.Drexel Monorail returned $7.20 and $4.80 and favored Elegant Designer paid $3.10 to show. Fit Performer won for the eighth time in 49 starts and earned $48,960 for Steel Your Face Stables and trainer Rick Dutrow."That race was awesome," said Dutrow, who was at Calder Race Course in Miami on Thursday to saddle Bobbie Use to victory in the Tropical Park Oaks. "She's been doing so good, we decided to take a shot in here, figuring we could always drop down to the `non-winners of three' if it didn't work out. She's a difficult horse to train, but she was giving us very good signs that she was going to run well. We'll see how she comes out of it."In addition to Bobby Use in Florida, Dutrow also won the third race at Aqueduct on Thursday with Orka, who was ridden by Pimentel.