OSKALOOSA, Iowa - A special “Tuesday Night Thunder” was on tap for tonight at the Southern Iowa Speedway, but Mother Nature brought her own thunder along with a heaping dose of rain, forcing officials to cancel the evening’s racing program.

The historic Mahaska County Monster will host Pepsi Season Championships next Wednesday, August 25, with the American Racer USRA Weekly Racing Series featuring USRA RHS Modifieds, USRA Karl Performance Parts B-Mods, USRA Karl Chevrolet Stock Cars and USRA Hobby Stocks.

Derek Kirkland of Centerville leads the Hobby Stock standings in search of his first track championship at Osky while Oskaloosa’s Tyler Groenendyk is in position to claim his second straight USRA Karl Performance Parts B-Mod title. Former USRA Hobby Stock National Champion Nathan Wood of Keswick sits atop the USRA Karl Chevrolet Stock Car rankings and Steven Blattler of Oskaloosa holds down the top spot in points for the USRA RHS Modifieds.

With 21 or more entries, the winner of the USRA RHS Modified main event will pocket $1,000 with a minimum $100 to each starter while USRA Karl Chevrolet Stock Cars will race for $400 to win and $75 to start and both the USRA Karl Performance Parts B-Mods and Hobby Stocks will battle for $300 to win and $60 to start.

Pits will open at 5 p.m., grandstands open at 5:30, hot laps begin at 7:15 and the first heat race starts at 7:30. General admission grandstand tickets are just $8 for adults, $3 for kids ages 6-12 and pit passes are $25. Children ages 5 and under are always admitted free of charge.

The Southern Iowa Speedway is a half-mile semi-banked clay oval located 0.5 mile west of US 63 on SR 92, then 0.3 mile north on I St. (at the Southern Iowa Fairgrounds). For more information, call 515-832-6000 or visit www.rlpromotions.com online. Race day info is available by calling the track hotline at 641-673-7004.

POINTS STANDINGS:

USRA Hobby Stocks:
1. 2k Derek Kirkland, Centerville ... 801
2. 18 Kris Walker, Oskaloosa ... 784
3. 3s Steve Allen, Oskaloosa ... 769
4. 84 Danny Thrasher, Agency ... 698
5. 78 Andy Coleman, Packwood ... 661
6. 33 Justin Hook, Oskaloosa ... 655
7. 911 Shawn Coleman, Packwood ... 619
8. 69 Craig Brown, Eldon ... 596
9. 64 Casey Greubel, Lacona ... 549
10. 67 Tyler Ruepke, Chariton ... 538

USRA Karl Performance Parts B-Mods:
1. 17t Tyler Groenendyk, Oskaloosa ... 788
2. 85 Jason McDaniel, Eldon ... 739
3. 0 Mike Wanders, Keswick ... 716
4. 1 Curtis Van Der Wal, Oskaloosa ... 659
5. 38 Bill Gibson, Knoxville ... 628
6. 8t Tony Johnson, Oskaloosa ... 624
7. D1 Drew Lawson, Oskaloosa ... 613
8. 16 Mike Shelton, Bloomfield ... 591
9. 10 Cayden Carter, Oskaloosa ... 582
10. 7 Carter Van Den Berg, Oskaloosa ... 549

USRA Karl Chevrolet Stock Cars:
1. 52 Nathan Wood, Keswick ... 766
2. 57v Mike Van Genderen, Newton ... 729
3. 20dub Shane Weller, Agency ... 680
4. 15k Kyle Harwood, Oskaloosa ... 672
5. 38 Rich Vogt, Fairfield ... 328
6. 22s Toby Smith, Oskaloosa ... 289
7. 98s Brian Sterling, Oskaloosa ... 240
8. 62x T.J. Henderson, Douds ... 165
9. 7 Rick Todd, Des Moines ... 158
10. 93 David Denham, Kahoka, Mo. ... 132

USRA RHS Modifieds:
1. 94 Steven Blattler, Oskaloosa ... 631
2. 40 Scott Dickey, Packwood ... 583
3. 4r Ron Ver Beek, Oskaloosa ... 548
4. 47 Josh Truman, Indianola ... 541
5. 00 David Ott, Ankeny ... 524
6. 22 Brandon Banks, Washington ... 483
7. 8 Colt Mather, Webster ... 460
8. 33z Zack VanderBeek, New Sharon ... 343
9. 62 Greg Cox, Altoona ... 329
10. 17p Brad Pinkerton, New Sharon ... 324

REMAINING 2010 SCHEDULE OF EVENTS:

Unless otherwise noted, pits open at 5:00, grandstands open at 5:30, hot laps begin at 7:15 and the first heat race starts at 7:30; Tickets are $8 for adults, $3 for kids ages 6-12 and pit passes are $25. Children under 6 are always admitted free of charge.

Wed Aug 25 … Pepsi Season Championships – American Racer USRA Weekly Racing Series featuring USRA RHS Modifieds, USRA Karl Chevrolet Stock Cars, USRA Karl Performance Parts B-Mods and USRA Hobby Stocks.

Wed Sep 1 … 7th Annual Musco Lighting Southern Iowa Challenge featuring USMTS Casey’s General Stores Modifieds plus USRA Karl Chevrolet Stock Cars, USRA Karl Performance Parts B-Mods and USRA Hobby Stocks. Tickets are $15 for adults, $5 for kids ages 6-12 and pit passes are $30.

Fri Oct 8 … 24th Annual Musco Lighting Fall Challenge featuring USRA RHS Modifieds, USRA Karl Chevrolet Stock Cars, USRA Karl Performance Parts B-Mods and USRA Hobby Stocks. Pits open at 4:00, grandstands open at 5:00, hot laps at 6:30 and racing at 7:00; Tickets are $12 for adults and $3 for kids ages 6-12.

Sat Oct 9 … 24th Annual Musco Lighting Fall Challenge featuring USRA RHS Modifieds, USRA Karl Chevrolet Stock Cars, USRA Karl Performance Parts B-Mods and USRA Hobby Stocks. Pits open at 2:00, grandstands open at 3:00, hot laps at 5:00 and racing at 5:30; Tickets are $15 for adults and $5 for kids ages 6-12.

For rules or other information about the United States Racing Association, check out the USRA website at www.usraracing.com.

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SOUTHERN IOWA SPEEDWAY SPONSORS: Arnold Motor Supply, Bank Iowa, Big Ed’s BBQ, Budweiser, Carter’s Manufacturing, Casey’s General Store, Community 1st Credit Union, Doug’s 4-Wheelers, Gatton Realty, Hawkeye Real Estate, Karl Chevrolet, KBOE Hot Country 104.9, Middlekoop Seed Corn, Mitrisin Motors, Musco Lighting, NAPA Auto Parts, Oskaloosa Herald, Palmer for State Representative, Pepsi, Pro-Line Buildings, Racemart, Rick’s Motocross Connection, Van Gorp Used Cars, Vermeer Manufacturing.