No doubt, the 3-year-old filly Ms Vanenzza is fast. On Sept. 14 at Delaware Park, she won a six-furlong, entry-level allowance race in about 1:09.60. But it&rsquo;s another quality &ndash; her ability to rate and rally &ndash; that makes Ms Vanenzza look formidable in the $50,000 Polly&rsquo;s Jet Stakes on Wednesday at Delaware.\r\nLast year at 2, Ms Vanenzza closed from midpack to win the Blue Hen Stakes, which, like the Polly&rsquo;s Jet, is contested at 1 1/16 miles over Delaware dirt. And with all speed horses entered in the Polly&rsquo;s Jet, an off-the-pace trip might be the right trip.\r\nMs Vanenzza is one of seven 3-year-old females in the $50,000 race, and her trainer, Juan Vazquez, also entered stretch-out sprinter Bernadette&rsquo;s Song. That filly figures to be prominently placed, and for that matter, so do most of the others.\r\nRail-drawn Worship the Moon&rsquo;s only two-turn win came on the lead, and she races with blinkers added Wednesday. Hyperlink, drawn in post 2, led or pressed in all of her 2010 dirt races. Todd Pletcher-trained Quiet Giant raced less than a length behind a sub-47-second half-mile split last out in a one-turn Belmont mile and led two races ago in a two-turn Delaware allowance. Fleeting Humor, 2 for 2 to start her career, has been the leader at the half-mile in two sprint starts.\r\nMs Vanenzza might not need a lot of pace help. After her Blue Hen win, she was shipped to Santa Anita last fall for the Breeders&rsquo; Cup Juvenile Fillies, where she finished a no-factor ninth at 94-1. Ms Vanenzza raced once over the winter, finishing second in a solid Gulfstream Park allowance race, and did not start again until her sharp Sept. 14 six-furlong Delaware allowance win, where she scored by almost seven lengths.\r\nMs Vanenzza&rsquo;s pedigree, by Successful Appeal and out of a Gilded Time mare, slants more to sprints than routes. Her two-turn win last year suggests individual type may trump pedigree generalities, but there&rsquo;s also the chance that Ms Vanenzza was simply a highly advanced 2-year-old more ready than her contemporaries for the challenges of route racing.\r\nThat&rsquo;s why the other closer in the Polly&rsquo;s Jet, Tiz Miz Sue, merits consideration. Tiz Miz Sue showed early brilliance last summer at Arlington, but for most of this season she appeared not to have progressed at age 3. Tiz Miz Sue quietly has gone 2 for 2 in Delaware dirt-route races and has turned in strong-looking morning work prepping for her first start since August.