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| 3/5/2021 | RPM Speedway - Crandall, TX Texas Spring Nationals Night 1 A Modifieds: USMTS - United States Modified Touring Series Dwarf, Limited Sport Mod, USRA Limited Mods, USRA Factory Stocks, USRA Tuners | Results | | Dillon Spreen (Dwarf) | 1st | - | - | 1st |
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| 4/3/2021 | Kennedale Speedway Park - Kennedale, TX Factory Stocks, Dwarf, IMCA Modified, IMCA Southern SportMod, IMCA Stock Car, IMCA Sport Compact | Results | | Dillon Spreen (Dwarf) | 8th | - | DNS | - |
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| 4/17/2021 | Cotton Bowl Speedway - Paige, TX Southern United Sprints, DCRST & Factory Stock Shootout 305 Sprints - Winged: Southern United Sprint Series Dwarf: Dwarf Car Racing Series of Texas Factory Stocks | Results | | Dillon Spreen (Dwarf) | 2nd | - | - | 4th |
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| 5/15/2021 | Cotton Bowl Speedway - Paige, TX Race - All Classes & DCRST Dwarf: Dwarf Car Racing Series of Texas Factory Stocks, Street Stocks, Sport Compact, IMCA Modified, IMCA Southern SportMod, IMCA Stock Car | Results | | Dillon Spreen (Dwarf) | 2nd | - | - | 3rd |
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| 5/21/2021 | Five Flags Speedway - Pensacola, FL Allen Turner Pro Late Model Series Event #2 Sportsmans, Asphalt Sport Mods, Asphalt Pure Stocks, Pro Late Model | Results | | Dillon Spreen (Asphalt Sport Mods) | - | - | - | 8th |
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| 5/30/2021 | Texana Raceway Park - Edna, TX Tony's Mobil Home Service Salute to the Troops Featuring the STLMS Late Models Dirt Late Models: XR Southern Storm Factory Stocks, A Modifieds, B Modifieds, Street Stocks, Dirt Cage Kart Junior 1, Flat Adult Clone, Dirt Pro Trucks, Limited Sport Mod, IMCA Mod Lite, Cage Jr. Predator, Cage Sr. Predator | Results | | Dillon Spreen (IMCA Mod Lite) | 6th | - | - | 10th |
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| 6/12/2021 | Cotton Bowl Speedway - Paige, TX Race - All Classes & DCRST Dwarf: Dwarf Car Racing Series of Texas Factory Stocks, Street Stocks, Sport Compact, IMCA Modified, IMCA Southern SportMod, IMCA Stock Car | Results | | Dillon Spreen (Dwarf) | 2nd | - | - | 3rd |
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| 6/18/2021 | Heart O' Texas Speedway - Waco, TX Texas Wing Modifieds - Lone Star Dwarf Cars - Hoosier Daddy Tire Throwing Contest Factory Stocks, Street Stocks, Supermodifieds, Dwarf, IMCA Modified, IMCA Southern SportMod, IMCA Stock Car | Results | | Dillon Spreen (Dwarf) | 3rd | - | - | 3rd |
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| 7/16/2021 | Heart O' Texas Speedway - Waco, TX Regular Race Night - Lone Star Dwarf Cars Factory Stocks, Street Stocks, Dwarf, IMCA Modified, IMCA Southern SportMod, IMCA Stock Car | Results | | Dillon Spreen (Dwarf) | 1st | - | - | 25th |
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| 7/17/2021 | Cotton Bowl Speedway - Paige, TX Summer Showdown Series 1 - All Classes & DCRST Dwarf: Dwarf Car Racing Series of Texas Factory Stocks, Street Stocks, Sport Compact, IMCA Modified, IMCA Southern SportMod, IMCA Stock Car | Results | | Dillon Spreen (Dwarf) | 1st | - | - | 2nd |
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| 7/24/2021 | Texana Raceway Park - Edna, TX CCT Field Services Night at the Races Factory Stocks, A Modifieds, Restricted 'A' Class, Stock Non-Wing, B Modifieds, Street Stocks, Dirt Cage Kart Junior 1, Flat Adult Clone, Limited Sport Mod, Pro Dwarf, IMCA Mod Lite, Cage Jr. Predator, Cage Sr. Predator | Results | | Dillon Spreen (Pro Dwarf) | 1st | - | - | 5th |
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| 8/7/2021 | Cotton Bowl Speedway - Paige, TX Summer Showdown Series Finale - All Classes & DCRST Dwarf: Dwarf Car Racing Series of Texas Factory Stocks, Street Stocks, Sport Compact, IMCA Modified, IMCA Southern SportMod, IMCA Stock Car | Results | | Dillon Spreen (Dwarf) | 1st | - | - | 8th |
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| 8/28/2021 | I-37 Speedway - Pleasanton, TX I-37 Speedway Race Night Factory Stocks, Asphalt Mini Stocks, Street Stocks, Dwarf, Economy Late Models, Limited Modified, IMCA Modified | Results | | Dillon Spreen (Dwarf) | 1st | - | - | 1st |
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| 9/11/2021 | I-37 Speedway - Pleasanton, TX I-37 Speedway Race Night Factory Stocks, Asphalt Mini Stocks, Street Stocks, Dwarf, Limited Modified, IMCA Modified | Results | | Dillon Spreen (Dwarf) | 3rd | - | - | 1st |
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| 9/25/2021 | Cotton Bowl Speedway - Paige, TX Race - All Classes & DCRST Dwarf: Dwarf Car Racing Series of Texas Factory Stocks, Street Stocks, Sport Compact, IMCA Modified, IMCA Southern SportMod, IMCA Stock Car | Results | | Dillon Spreen (Dwarf) | 1st | - | - | 2nd |
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| 10/22/2021 | Heart O' Texas Speedway - Waco, TX 24th Annual Fall Classic - 6th Annual Dwarf Car Nationals - Qualifying Night Factory Stocks, Street Stocks, Dirt Late Models, Limited Sport Mod, IMCA Modified, IMCA Southern SportMod, IMCA Stock Car, Veteran Dwarf, Pro Dwarf | Results | | Dillon Spreen (Pro Dwarf) | 3rd | - | - | 2nd |
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| 10/23/2021 | Heart O' Texas Speedway - Waco, TX 24th Annual Fall Classic - 6th Annual Dwarf Car Nationals - Championship Night Factory Stocks, Street Stocks, Limited Sport Mod, IMCA Modified, IMCA Southern SportMod, IMCA Stock Car, Veteran Dwarf, Pro Dwarf | Results | | Dillon Spreen (Pro Dwarf) | - | - | - | 4th |
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