Three stakes winners whose recent form has gone sour will try to regain some confidence against slightly easier competition in Monday’s featured ninth race at Parx Racing. The 3-year-old Vindy City, winner of the Miss Preakness in May; Miss Blue Tye Dye, who collected six stakes victories against Pennsylvania-breds between August 2008 and October 2009; and Indy’s Alexandra, winner of the $100,000 Three Ring as a 2-year-old nearly three years ago, are among eight fillies and mares set to race 6 1/2 furlongs in a third-level optional $40,000 claimer. Collectively, the trio have combined to lose 20 straight races while competing mainly at higher levels than Monday’s race. Of the group, Vindy City is the most lightly raced with a 3-for-6 lifetime record, highlighted by her one-length score at 3-2 odds in the six-furlong Miss Preakness at Pimlico on May 14. In two subsequent stakes starts, Vindy City finished ahead of just one horse while beaten a combined 22 3/4 lengths. Dropping into a non-stakes for the first time since January, Vindy City has a license to improve, but it must be noted that her trainer, John Servis, is just 2 for his last 21 with horses returning from a break of 61 to 180 days in races between 6 1/2 and seven furlongs, according to DRF ’s Formulator. The 6-year-old Miss Blue Tye Dye has dropped eight in a row since winning the 1 1/16-mile Cozy Lace at Philadelphia Park a year ago. She is one of two horses in for the optional $40,000 tag. Miss Blue Tye Dye was claimed for $22,000 by Penn National-based trainer Dave Geist in mid-July. She shortens up in distance and drops in class following two dull efforts in restricted stakes. Geist is just 7 for 88 with horses coming back in less than 30 days switching from routes to sprints. Indy’s Alexandra has lost 10 straight since taking the 1 1/16-mile Three Ring at Calder in December 2007. She switches from turf to dirt and shortens from a route to a sprint in her second start for trainer Bruce Levine, who is 4 for 15 in that category with runners returning from a break of 31 to 60 days. The best recent form in the field belongs to Unicorn Girl, a winner of back-to-back $32,000 to $35,000 claiming races at Monmouth but idle since July 18, and Cat’s Got Legs, who won for a $32,000 tag at Monmouth last time out on Aug. 15.