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| 3/6/2021 | Springfield Raceway - Springfield, MO MARCH MADNESS Midwest Modifieds, Dirt Late Models, Pro Legends, Pure Stock, USRA B-Mods | Results | | Riley Duncan (Dirt Late Models) | 6th (DNF) | - | - | 19th |
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| 4/11/2021 | Springfield Raceway - Springfield, MO CASHMONEY DIRT LATE MODELS Dirt Late Models: 4 State Dirt Late Model Series A Modifieds, Midwest Modifieds, Pro Legends, Limited Sport Mod, USRA B-Mods | Results | | Riley Duncan (Dirt Late Models) | 6th | - | DNS | - |
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| 5/1/2021 | Salina Highbanks Speedway - Salina, OK NAAPWS CHAMPIONSHIP AND CASH MONEY LATE MODELS Dirt Late Models: 4 State Dirt Late Model Series Hobby Stocks, A Modifieds, B Modifieds | Results | | Riley Duncan (Dirt Late Models) | 6th | - | 7th | - |
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| 5/29/2021 | Legit Speedway Park - West Plains, MO Dirt Late Models: 4 State Dirt Late Model Series Hobby Stocks, A Modifieds, Super Stocks | Results | | Riley Duncan (Dirt Late Models) | 7th | - | 4th | - |
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| 5/30/2021 | Midway Raceway - Lebanon, MO Tony Roper Memorial Dirt Late Models: 4 State Dirt Late Model Series | Results | | Riley Duncan (Dirt Late Models) | 5th | - | DNS | - |
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| 6/5/2021 | Springfield Raceway - Springfield, MO Dirt Late Models: 4 State Dirt Late Model Series Midwest Modifieds, Pro Legends, Limited Sport Mod, Pure Stock, USRA B-Mods | Results | | Riley Duncan (Dirt Late Models) | 7th | - | 4th | - |
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| 6/12/2021 | Tri-State Speedway - Pocola, OK Ca$h Money SDS Late Models Dirt Late Models: 4 State Dirt Late Model Series Economy Late Models, USRA B-Mods, USRA Modifieds, USRA Factory Stocks | Results | | Riley Duncan (Dirt Late Models) | 3rd | - | - | 20th (DNF) |
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| 7/3/2021 | Springfield Raceway - Springfield, MO Dirt Late Models: 4 State Dirt Late Model Series A Modifieds, Midwest Modifieds, Pro Legends, Limited Sport Mod, Pure Stock, USRA B-Mods | Results | | Riley Duncan (Dirt Late Models) | 7th | - | 10th | - |
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| 7/23/2021 | Dallas County Speedway (MO) - Urbana, MO DCS 25th Anniversary Blowout Dirt Late Models: 4 State Dirt Late Model Series Midwest Modifieds, Pony Stock, Pure Stock, USRA B-Mods, USRA Stock Cars | Results | | Riley Duncan (Dirt Late Models) | 2nd | - | - | 14th |
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| 8/14/2021 | Springfield Raceway - Springfield, MO Flyin Farmer 55 Dirt Late Models: 4 State Dirt Late Model Series Stock Cars, A Modifieds, Midwest Modifieds, Pro Legends, Limited Sport Mod, Pure Stock, USRA B-Mods | Results | | Riley Duncan (Dirt Late Models) | 7th | - | - | - |
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| 8/28/2021 | Ultimate Motorsports & RV Park - Elkin, NC ULTIMATE SUPER LATE MODELS! Dirt Super Late Models, A Modifieds, Pony Stock, Baby Grand, Pure Stock, Dirt Crate Late Models, USRA Late Models | Results | | Riley Duncan (Dirt Crate Late Models) | 5th | - | - | 11th |
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| 9/5/2021 | Springfield Raceway - Springfield, MO KTTS 4 States Area Dirt Track Championship Dirt Late Models: 4 State Dirt Late Model Series Stock Cars, A Modifieds, Midwest Modifieds, Pro Legends, Limited Sport Mod, Pure Stock, USRA B-Mods | Results | | Riley Duncan (Dirt Late Models) | 3rd | - | 3rd | - |
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| 9/11/2021 | Tri-State Speedway - Pocola, OK Ca$h Money SDS Late Models Dirt Late Models: 4 State Dirt Late Model Series Economy Late Models, USRA B-Mods, USRA Modifieds, USRA Factory Stocks, USRA Stock Cars | Results | | Riley Duncan (Dirt Late Models) | 7th | - | 6th | - |
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| 9/17/2021 | Springfield Raceway - Springfield, MO Midwest Sheetmetal Route 66 Showdown Dirt Late Models: 4 State Dirt Late Model Series Stock Cars, A Modifieds, Midwest Modifieds, Limited Sport Mod | Results | | Riley Duncan (Dirt Late Models) | 6th | - | - | - |
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| 9/18/2021 | Springfield Raceway - Springfield, MO Midwest Sheetmetal Route 66 Showdown Dirt Late Models: 4 State Dirt Late Model Series Stock Cars, Midwest Modifieds, Pro Legends, Limited Sport Mod, Pure Stock, USRA B-Mods | Results | | Riley Duncan (Dirt Late Models) | 7th (DNF) | - | 8th | - |
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| 9/25/2021 | Monett Motor Speedway - Monett, MO Fall Weekly Race 3 + Late Model DIRTcar Late Models, Stock Cars, Midwest Modifieds, B Modifieds, Street Stocks, Pure Stock | Results | | Riley Duncan (DIRTcar Late Models) | 2nd | - | - | 5th |
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| 11/20/2021 | Springfield Raceway - Springfield, MO CASEY'S PRESENTS TURKEY BOWL XV / HEATS & FEATURE Late Model , A Mod / B MAIN & A MAIN from Friday A Modifieds, Midwest Modifieds, Dirt Late Models, Pro Legends, Limited Sport Mod, USRA B-Mods | Results | | Riley Duncan (Dirt Late Models) | 8th | - | 6th | - |
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