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| 5/23/2020 | Central Missouri Speedway - Warrensburg, MO POWRi WAR Sprints at CMS Non-Winged Sprints: POWRi WAR Sprints Hobby Stocks, A Modifieds, B Modifieds, Street Stocks, Mod Lites | Results | | Don Marrs (B Modifieds) | 4th | - | - | 18th |
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| 5/24/2020 | Central Missouri Speedway - Warrensburg, MO Race #2 - Memorial Day Weekend - Night 2 Special Events Hobby Stocks, A Modifieds, B Modifieds, Street Stocks, Mod Lites | Results | | Don Marrs (B Modifieds) | 7th | - | 8th | 15th |
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| 5/29/2020 | Lakeside Speedway - Kansas City, KS Factory Stocks, Stock Cars, A Modifieds, Midwest Modifieds, B Modifieds | Results | | Don Marrs (Factory Stocks) | 4th | - | - | 7th | | Don Marrs (B Modifieds) | 6th | - | - | 6th |
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| 5/30/2020 | Central Missouri Speedway - Warrensburg, MO Race #3 - SLMR Late Models! Dirt Super Late Models: SLMR Late Model Series A Modifieds, B Modifieds, Street Stocks, Mod Lites | Results | | Don Marrs (B Modifieds) | 3rd | - | - | 15th |
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| 6/5/2020 | Lakeside Speedway - Kansas City, KS Weekly Racing #2 Factory Stocks, Stock Cars, A Modifieds, Midwest Modifieds, B Modifieds, Dirt Late Models | Results | | Don Marrs (Factory Stocks) | 4th | - | - | DNS | | Don Marrs (B Modifieds) | 4th | - | - | 11th | | Don Marrs (Dirt Late Models) | 1st | - | - | 8th |
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| 6/12/2020 | Lakeside Speedway - Kansas City, KS Weekly Racing #3 Factory Stocks, Stock Cars, A Modifieds, Midwest Modifieds, B Modifieds, Dirt Late Models | Results | | Don Marrs (B Modifieds) | 5th | - | - | 12th | | Don Marrs (Dirt Late Models) | 6th | - | - | 2nd |
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| 6/19/2020 | Lakeside Speedway - Kansas City, KS Weekly Racing #4 Factory Stocks, A Modifieds, Midwest Modifieds, B Modifieds, Mod Lites | Results | | Don Marrs (B Modifieds) | 5th | - | - | 10th |
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| 6/26/2020 | Lakeside Speedway - Kansas City, KS Weekly Racing #5 + Midwest Wingless Sprint Cars Factory Stocks, Stock Cars, Midwest Modifieds, B Modifieds, Non-Winged Sprints | Results | | Don Marrs (Factory Stocks) | 5th | - | - | DNS | | Don Marrs (B Modifieds) | 4th | - | - | 10th |
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| 7/3/2020 | Lakeside Speedway - Kansas City, KS Weekly Racing #6 - Gary D Stock Car Special Factory Stocks, Stock Cars, A Modifieds, B Modifieds, Mod Lites | Results | | Don Marrs (Factory Stocks) | 4th | - | - | 8th | | Don Marrs (B Modifieds) | 7th | - | 8th | DNS |
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| 7/10/2020 | Lakeside Speedway - Kansas City, KS Clyde Ellis Memorial Dirt Super Late Models: Lucas Oil MLRA Factory Stocks, A Modifieds, Midwest Modifieds, B Modifieds, Dirt Late Models, Mod Lites | Results | | Don Marrs (Factory Stocks) | 1st | - | - | 4th | | Don Marrs (B Modifieds) | 6th | - | - | 18th (DNF) | | Don Marrs (Dirt Late Models) | 1st | - | - | 1st |
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| 7/17/2020 | Lakeside Speedway - Kansas City, KS Weekly Racing #8 Factory Stocks, Stock Cars, A Modifieds, Midwest Modifieds, B Modifieds, Dirt Late Models | Results | | Don Marrs (Factory Stocks) | 5th | - | - | 7th | | Don Marrs (B Modifieds) | 1st | - | - | 17th | | Don Marrs (Dirt Late Models) | 1st | - | - | 2nd |
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| 7/18/2020 | Central Missouri Speedway - Warrensburg, MO Race #9 - Heartland Waste Race Night! Hobby Stocks, A Modifieds, B Modifieds, Street Stocks, Mod Lites | Results | | Don Marrs (B Modifieds) | 5th | - | - | 8th |
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| 7/24/2020 | Lakeside Speedway - Kansas City, KS Weekly Racing #9 Factory Stocks, Stock Cars, A Modifieds, Midwest Modifieds, B Modifieds, Dirt Late Models | Rain Out |
| 8/7/2020 | Lakeside Speedway - Kansas City, KS Weekly Racing #11 - Kids Night + E Mod Explosion Factory Stocks, Stock Cars, A Modifieds, Midwest Modifieds, B Modifieds, Dirt Late Models | Rain Out |
| 8/11/2020 | Lakeside Speedway - Kansas City, KS 360 Sprints - Winged, Stock Cars, B Modifieds | Results | | Don Marrs (B Modifieds) | 6th | - | - | 22nd (DNF) |
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| 8/14/2020 | Lakeside Speedway - Kansas City, KS Weekly Racing #12 - Janet Billings Memorial Factory Stocks, Stock Cars, A Modifieds, Midwest Modifieds, B Modifieds | Results | | Don Marrs (Factory Stocks) | 4th | - | - | 7th | | Don Marrs (B Modifieds) | 5th | - | - | 15th |
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| 8/21/2020 | Lakeside Speedway - Kansas City, KS Weekly Racing #13 Factory Stocks, Stock Cars, A Modifieds, Midwest Modifieds, B Modifieds, Dirt Late Models | Results | | Don Marrs (Factory Stocks) | 5th | - | - | 7th | | Don Marrs (B Modifieds) | 4th | - | - | 10th | | Don Marrs (Dirt Late Models) | 1st | - | - | 7th (DNF) |
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| 8/28/2020 | Lakeside Speedway - Kansas City, KS Weld Memorial with Midwest Wingless Sprint Cars Stock Cars, Midwest Modifieds, B Modifieds, Non-Winged Sprints, Mod Lites | Results | | Don Marrs (B Modifieds) | 2nd | - | - | 3rd |
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| 9/4/2020 | Lakeside Speedway - Kansas City, KS Tom Karrick Memorial Factory Stocks, Stock Cars, A Modifieds, Midwest Modifieds, B Modifieds, Dirt Late Models, IMCA Modified | Results | | Don Marrs (Factory Stocks) | 1st | - | - | 3rd | | Don Marrs (B Modifieds) | 1st | - | - | 7th | | Don Marrs (Dirt Late Models) | 3rd | - | - | 3rd |
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| 9/18/2020 | Lakeside Speedway - Kansas City, KS Joe Berry Clash of The B-Mods Stock Cars, A Modifieds, Midwest Modifieds, B Modifieds, Dirt Late Models | Results | | Don Marrs (B Modifieds) | 2nd | - | - | 11th | | Don Marrs (Dirt Late Models) | 1st | - | - | 7th (DNF) |
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| 9/19/2020 | Lakeside Speedway - Kansas City, KS Joe Berry Clash of the B-Mods Night 2 Factory Stocks, Stock Cars, Midwest Modifieds, B Modifieds | Results | | Don Marrs (Factory Stocks) | 4th | - | - | 14th (DNF) | | Don Marrs (B Modifieds) | 11th | - | - | 11th |
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| 10/30/2020 | Lakeside Speedway - Kansas City, KS 5th Annual Grant Junghans Memorial Dirt Super Late Models, USRA B-Mods, USRA Modifieds, IMCA Modified | Results | | Don Marrs (USRA B-Mods) | 6th | - | 4th | 17th |
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| 11/27/2020 | Springfield Raceway - Springfield, MO QUALIFYING FOR TURKEY BOWL / TEST N TUNE A Modifieds, Midwest Modifieds, Dirt Late Models, Pro Legends, Limited Sport Mod, Pure Stock, USRA B-Mods, Dirt Mini Late Models | Results | | Don Marrs (USRA B-Mods) | 8th | - | - | - |
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| 11/28/2020 | Springfield Raceway - Springfield, MO TURKEY BOWL XIV A Modifieds, Midwest Modifieds, Dirt Late Models, Pro Legends, Limited Sport Mod, Pure Stock, USRA B-Mods, Dirt Mini Late Models | Results | | Don Marrs (USRA B-Mods) | - | - | 6th | - |
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