HALLANDALE BEACH, Fla. - How tough was the field for Saturday's at Gulfstream Park? Tough enough that Quiet Harbor entered the race having won four in a row, including the Grade 3 Violet in her 2009 finale, and still went postward at odds of 18-1.\nNow, make that five in a row.\nQuiet Harbor benefitted from a perfect trip under jockey Eddie Castro, splitting horses near the inside turning for home before wearing down pacesetter Romacaca and outfinishing Lady Shakespeare to register a head victory in the filly and mare turf fixture.\nLady Shakespeare rallied from between horses to finish on even terms with Romacaca for second money.\nQuiet Harbor returned $39.40 after covering 1 1/16 miles in 1:41.02 over a firm course. All five of her wins during the streak have come with Castro aboard. \nQuiet Harbor, a 5-year-old homebred daughter of Silver Deputy, is trained by Shug McGaughey for owner Stuart Janney III.\n"Going in, I thought this was about as tough a stakes for this group, end to end, from 1 to 13, that you'll see," McGaughey said. "Eddie has ridden her well in all her races, and she had to come through a little trouble today. It was a good race off the layoff."