The Bullring at Las Vegas Motor Speedway and The Orleans Hotel and Casino present a racing triple-header this Saturday with The Orleans Hotel and Casino USAC Sprint Car and Midget Nationals. The race was rescheduled after weather cancelled the original date in April. Fans will have an opportunity to meet and greet the stars of the USAC Sprint Car and Midget Nationals during a driver autograph session beginning at 6 p.m. The USAC Valvoline Western Sprint Car Series returns to the Bullring with a 40-lap feature event. Michael Lewis of Noblesville, Ind., has a slim two-point lead over Tony Hunt of Fair Oaks, Calif. Lewis, the reigning points leader, has five wins on the season with three races left on the season including this weekend. The USAC Western Midget Car Series will compete in a feature 40-lap race. Johnny Rodriguez of Elk Grove, Calif., leads the championship standings by 126 points with four races left. The USAC Ford Focus Midget Car Series makes its Silver State debut with a 25-lap feature event. Participants from both the North and South divisions will compete on the 3/8-mile paved oval. WRA Midgets and WRA Sprints also are on the racing card with 10-lap features. Spectator gates open at 4 p.m. General admission for adults is $15 for adults and $4 for children ages 6-12, children five and under are free, and admission to the Stockyards is $50. A family four-pack of tickets is also available for $34. Pit gates open at noon. Admission is $20 for USAC members and $30 for non-members.