OMAHA, Neb. &ndash; The biggest weekend of racing in Nebraska begins Thursday evening as Horsemen&rsquo;s Park opens for its 13th annual summer Festival of Racing, a four&#45;day fair meet that draws the largest racing crowds of the year in Nebraska.Thursday&rsquo;s card begins at 6 p.m. Central and will consist of four races headlined by the $27,500 Fantango Lady Stakes for 3&#45;year&#45;old Nebraska&#45;bred fillies. Lou Lou Larue will aim for her fourth straight stakes victory in the one&#45;mile Fantango Lady.New to the Horsemen&rsquo;s Park grounds this year is the Sky Box, a five&#45;table seating area sponsored by the Omaha Nighthawks , a new franchise member of the United Football League that will begin playing this fall. The Nighthawks will have exclusive use of the area Friday to showcase their prospective players. T&#45;shirt tosses follow each race, while food and beverage tents are located throughout the grounds, lending to the fair atmosphere that has been so successful here since the first Horemen&rsquo;s Park season in 1998. The highlight of the meet comes Sunday when older horses will go a mile in the $50,000 Omaha Stakes, which drew 52 nominations including Bosselman/Gus Fonner Stakes and Cornhusker Handicap winner Shadowbdancing. Thursday&rsquo;s feature brings out a field of seven fillies, each of whom willbe trying a mile for the first time. Lou Lou Larue, trained by Chuck Turco, is the even&#45;money morning&#45;line favorite. Lou Lou Larue is coming off an under&#45;wraps three&#45;length win at Lincoln in the Breeders&rsquo; Special going six furlongs on July 11. Lou Lou Larue, a daughter of Blumin Affair, has posted 5 wins in her 7 career starts. Turco will also send out Nothingfeared as part of an uncoupled entry. Doug Anderson will ship in T Jays Affair from Prairie Meadows off a head loss against optional claiming company July 6. Ramsey Zimmerman will be in to ride.