OSKALOOSA, Iowa (Sept. 15) — Rain prior to start time Saturday at the Southern Iowa Speedway has forced the postponement of the 16th Annual MUSCO Lighting Fall Challenge to Sunday afternoon, Sept. 16.

A complete program of USRA Modifieds, USRA Stock Cars, USRA B-Mods and USRA Hobby Stocks is on tap, and officials expect an influx of additional cars and drivers for the Sunday show. All drivers are invited to attend for a complete start-to-finish show of qualifying heats and features.

Modified drivers will be competing for $2,000 to win, while Stock Cars go for $1,000 to win. Both B-Mod and Hobby Stocks will battle for a $500 top prize.

SUNDAY MAIN EVENT PAYOUTS:

Modifieds - $2000, $1200, $800, $600, $500, $450, $400, $350, $300, $250, $200, $180, $160, $150, $150, $150, $150, $150, $150, $150, $150, $150, $150, $150.

Stock Cars - $1000, $800, $600, $500, $400, $300, $250, $200, $175, $150, $140, $130, $120, $110, $100, $90, $80, $75, $75, $75, $75, $75, $75, $75.

B-Mods - $500, $350, $250, $200, $175, $150, $125, $100, $90, $80, $75, $70, $65, $65, $60, $60, $55, $55, $50, $50, $50, $50, $50, $50.

Hobby Stocks - $500, $400, $300, $200, $175, $150, $130, $120, $110, $105, $100, $90, $80, $75, $75, $70, $70, $65, $65, $60, $60, $55, $55, $50.

The top-6 drivers in the Stock Car, B-Mod and Hobby Stock features from Friday are locked into the first six spots on the inside row for Sunday afternoon's championship features, with all remaining starting spots to be determined Sunday.

USRA Casey's General Stores Weekly Racing Series national points are also up for grabs in all four divisions.

On Sunday, gates open at 12:30 p.m., with hot laps at 2:30 and racing at 3:00. Adult general admission grandstand tickets are just $15, juniors (12-18) and seniors (62+) get in for $12, and kids 11 and under get in for FREE. Pit passes are $25.

This event is sanctioned by the United States Racing Association (USRA). USRA national points will be awarded each night to USRA-licensed drivers, however, a USRA license is not required to compete in this event. For Modifieds, Stock Cars and B-Mods, American Racer KK704 or G60 racing tires are preferred. The Hoosier G60 tire will also be allowed, but no USRA points will be awarded. For complete rules go to www.rlpromotions.com/oskaloosa and click on the Classes link.

For more information call the Southern Iowa Speedway office at 515-832-6000. The Southern Iowa Speedway is a half-mile semi-banked clay oval located 0.5 mile west of US 63 on SR 92, then four blocks north on N. I St. (at the Southern Iowa Fairgrounds). For day-of-race information, call the track hotline at (507) 634-4281 or visit www.rlpromotions.com/oskaloosa online. For more information about the USRA, visit www.usraracing.com.