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| 2/2/2021 | Volusia Speedway Park - De Leon Springs, FL 50th Annual DIRTcar Nationals - Night #1 410 Sprints - Winged, DIRTcar UMP Modifieds | Results | | Dave Wietholder (DIRTcar UMP Modifieds) | 2nd | - | - | 13th |
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| 2/3/2021 | Volusia Speedway Park - De Leon Springs, FL DIRTcar Nationals $6,000 to win 410 Sprints - Winged: All Star Circuit of Champions DIRTcar UMP Modifieds | Results | | Dave Wietholder (DIRTcar UMP Modifieds) | 5th | - | - | - |
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| 2/4/2021 | Volusia Speedway Park - De Leon Springs, FL DIRTcar Nationals $6,000 to win 410 Sprints - Winged: All Star Circuit of Champions DIRTcar UMP Modifieds | Results | | Dave Wietholder (DIRTcar UMP Modifieds) | 6th | - | 1st | - |
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| 2/5/2021 | Volusia Speedway Park - De Leon Springs, FL 50th Annual DIRTcar Nationals - Night #4 (DIRTcar UMP Modifieds Gator Championship Night 1) 410 Sprints - Winged: World of Outlaws DIRTcar UMP Modifieds | Results | | Dave Wietholder (DIRTcar UMP Modifieds) | - | - | - | - |
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| 2/7/2021 | Volusia Speedway Park - De Leon Springs, FL 50th Annual DIRTcar Nationals - Night #6 (DIRTcar UMP Modifieds Gator Championship Night 3) 410 Sprints - Winged: World of Outlaws DIRTcar UMP Modifieds | Results | | Dave Wietholder (DIRTcar UMP Modifieds) | 2nd | - | - | 12th |
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| 2/8/2021 | Volusia Speedway Park - De Leon Springs, FL 50th Annual DIRTcar Nationals - Night #7 (DIRTcar UMP Modifieds Gator Championship Night 4) Dirt Super Late Models, DIRTcar UMP Modifieds, CRUSA Dirt Late Models, DIRTcar Pro Late Models | Results | | Dave Wietholder (DIRTcar UMP Modifieds) | - | - | 4th (DNF) | - |
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| 4/16/2021 | Tri City Speedway - Granite City, IL 410 Sprints - Winged: MOWA-Midwest Open Wheel Association DIRTcar Late Models, DIRTcar UMP Modifieds, Winged Outlaw | Results | | Dave Wietholder (DIRTcar UMP Modifieds) | 1st | - | - | 8th |
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| 4/30/2021 | Tri City Speedway - Granite City, IL Fast Friday Racing UMP LM, UMP Mods, BMods, UMP St Stk, UMP 4-Cyl & Winged Micros DIRTcar Late Models, DIRTcar UMP Modifieds, DIRTcar Sport Compact, Winged Outlaw, B Modifieds, Street Stocks | Results | | Dave Wietholder (DIRTcar UMP Modifieds) | 1st | - | - | 2nd |
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| 5/7/2021 | Tri City Speedway - Granite City, IL Fast Friday Racing UMP LM, UMP Mods Twin 20's(2 Complete Features), BMods, 4-Cyl & Kids Power Wheels DIRTcar Late Models, DIRTcar UMP Modifieds, DIRTcar Sport Compact, B Modifieds | Results | | Dave Wietholder (DIRTcar UMP Modifieds) | 1st | - | - | 5th |
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| 5/14/2021 | Tri City Speedway - Granite City, IL Fast Friday Racing UMP Mods, BMods (Double Features $500/$75), UMP St Stk, & UMP 4-Cyl (No LM) DIRTcar UMP Modifieds, DIRTcar Sport Compact, B Modifieds, Street Stocks | Results | | Dave Wietholder (DIRTcar UMP Modifieds) | 4th | - | - | 3rd |
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| 5/15/2021 | Federated Auto Parts I-55 Raceway - Pevely, MO Weekly Racing DIRTcar Late Models, DIRTcar UMP Modifieds, DIRTcar Sportsmans, DIRTcar Sport Compact, B Modifieds | Results | | Dave Wietholder (DIRTcar UMP Modifieds) | 2nd | - | - | 2nd |
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| 5/21/2021 | Tri City Speedway - Granite City, IL 360 Sprints - Winged: ASCS National with ASCS Warrior Region DIRTcar UMP Modifieds, B Modifieds | Results | | Dave Wietholder (DIRTcar UMP Modifieds) | 4th | - | - | 5th |
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| 5/25/2021 | Tri City Speedway - Granite City, IL Castrol FloRacing Late Model Night in America $10,000 with UMP Mods $1,500 Dirt Super Late Models: Castrol FloRacing Night in America DIRTcar Late Models, DIRTcar UMP Modifieds, CRUSA Dirt Late Models | Results | | Dave Wietholder (DIRTcar UMP Modifieds) | 3rd | - | - | 9th |
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| 6/4/2021 | Tri City Speedway - Granite City, IL "4-Cyl Takeover" LM, Mods, BMods, St Stk, Wing Micros $500, 4-cyl $1000,$800,$600 + Kids Power Wheel DIRTcar Late Models, DIRTcar UMP Modifieds, DIRTcar Sport Compact, Winged Outlaw, B Modifieds, Street Stocks | Results | | Dave Wietholder (DIRTcar UMP Modifieds) | 2nd | - | - | 5th |
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| 6/11/2021 | Tri City Speedway - Granite City, IL Fast Friday Racing UMP LM, UMP Mods, BMods, UMP St Stk, & UMP 4-Cyl DIRTcar Late Models, DIRTcar UMP Modifieds, DIRTcar Sport Compact, B Modifieds, Street Stocks | Results | | Dave Wietholder (DIRTcar UMP Modifieds) | 2nd | - | - | 2nd |
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| 6/16/2021 | Peoria Speedway - Peoria, IL DIRTCAR SUMMER NATIONALS DIRTcar Late Models: DIRTcar Summer Nationals DIRTcar UMP Modifieds: DIRTcar Modified Nationals | Results | | Dave Wietholder (DIRTcar UMP Modifieds) | 1st | - | - | 2nd |
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| 6/18/2021 | Tri City Speedway - Granite City, IL UMP Summer Nationals UMP LM $10,000 with Summit Mods $1,500 & BMods $1,000 DIRTcar Late Models: DIRTcar Summer Nationals DIRTcar UMP Modifieds: DIRTcar Modified Nationals B Modifieds | Results | | Dave Wietholder (DIRTcar UMP Modifieds) | 2nd | - | - | 3rd |
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| 7/4/2021 | Lincoln Speedway - Lincoln, IL DIRTcar Summer Nationals Hell Tour "Graue Chevrolet Showdown" with FIREWORKS!!! DIRTcar Late Models: DIRTcar Summer Nationals DIRTcar UMP Modifieds: DIRTcar Modified Nationals 305 Sprints - Winged, Dirt Super Late Models | Results | | Dave Wietholder (DIRTcar UMP Modifieds) | 5th | - | 1st | 17th |
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| 7/6/2021 | Knox County Fairgrounds - Knoxville, IL DIRTCAR SUMMER NATIONALS DIRTcar Late Models: DIRTcar Summer Nationals DIRTcar UMP Modifieds: DIRTcar Modified Nationals | Results | | Dave Wietholder (DIRTcar UMP Modifieds) | 4th | - | - | 11th |
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| 7/7/2021 | Spoon River Speedway - Canton, IL DIRTCAR SUMMER NATIONALS DIRTcar Late Models: DIRTcar Summer Nationals DIRTcar UMP Modifieds: DIRTcar Modified Nationals | Results | | Dave Wietholder (DIRTcar UMP Modifieds) | 5th | - | 1st | 7th |
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| 7/23/2021 | Tri City Speedway - Granite City, IL "Russ Wallace Memorial" Summer Nationals Race #2 UMP LM $10,000,UMP Mod $1,500 & BMods $1,000 DIRTcar Late Models: DIRTcar Summer Nationals DIRTcar UMP Modifieds: DIRTcar Modified Nationals B Modifieds | Results | | Dave Wietholder (DIRTcar UMP Modifieds) | 8th | - | 9th | - |
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| 7/25/2021 | Lincoln Speedway - Lincoln, IL USAC Engler IMRA SpeeD2 Midgets 410 Sprints - Winged, Economy Midgets, DIRTcar UMP Modifieds, Street Stocks, Hornets, Pro Late Model | Results | | Dave Wietholder (DIRTcar UMP Modifieds) | 2nd | - | - | 2nd |
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| 7/30/2021 | Tri City Speedway - Granite City, IL Fast Friday Racing UMP LM, UMP Mods, BMods, UMP St Stk, & UMP 4-Cyl DIRTcar Late Models, DIRTcar UMP Modifieds, DIRTcar Sport Compact, B Modifieds, Street Stocks | Results | | Dave Wietholder (DIRTcar UMP Modifieds) | 1st | - | - | 6th |
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| 8/6/2021 | Tri City Speedway - Granite City, IL Fast Friday Racing UMP LM, UMP Mods, BMods, UMP St Stk, & UMP 4-Cyl DIRTcar Late Models, DIRTcar UMP Modifieds, DIRTcar Sport Compact, B Modifieds, Street Stocks | Results | | Dave Wietholder (DIRTcar UMP Modifieds) | 1st | - | - | 1st |
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| 8/20/2021 | Tri City Speedway - Granite City, IL "Brad Yotter Memorial" UMP LM, UMP Mods, BMods, UMP St Stk, & UMP 4-Cyl plus Kids Power Wheels DIRTcar Late Models, DIRTcar UMP Modifieds, DIRTcar Sport Compact, B Modifieds, Street Stocks | Results | | Dave Wietholder (DIRTcar UMP Modifieds) | 1st | - | - | 6th |
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| 8/27/2021 | Tri City Speedway - Granite City, IL 410 Sprints - Winged: MOWA-Midwest Open Wheel Association DIRTcar Late Models, DIRTcar UMP Modifieds, DIRTcar Sport Compact | Results | | Dave Wietholder (DIRTcar UMP Modifieds) | 4th | - | - | 6th |
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| 9/10/2021 | Tri City Speedway - Granite City, IL Fast Friday Racing UMP LM, UMP Mods, BMods, UMP St Stk, & UMP 4-Cyl DIRTcar Late Models, DIRTcar UMP Modifieds, DIRTcar Sport Compact, B Modifieds, Street Stocks | Results | | Dave Wietholder (DIRTcar UMP Modifieds) | 5th | - | 3rd | 12th |
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| 9/17/2021 | Tri City Speedway - Granite City, IL Fan App & TDT Night UMP LM, Mods St Stk & 4-cyl with BMods, Winged Micros & Kids Power Wheels DIRTcar Late Models, DIRTcar UMP Modifieds, DIRTcar Sport Compact, Winged Outlaw, B Modifieds, Street Stocks | Results | | Dave Wietholder (DIRTcar UMP Modifieds) | 2nd | - | - | 8th |
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| 9/23/2021 | Tri City Speedway - Granite City, IL 17th Annual Summit Modified Mania with Twin Mod Features $2000 to win each and UMP LM $3000 to win DIRTcar Late Models, DIRTcar UMP Modifieds | Results | | Dave Wietholder (DIRTcar UMP Modifieds) | 4th | - | - | - |
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| 9/24/2021 | Tri City Speedway - Granite City, IL 17th Annual Summit Modified Mania with Twin Mod Features $2000 to win each and UMP LM $3000 to win DIRTcar Late Models, DIRTcar UMP Modifieds | Results | | Dave Wietholder (DIRTcar UMP Modifieds) | 2nd | - | - | 4th |
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| 9/30/2021 | Lincoln Speedway - Lincoln, IL DirtCar Fall Nationals Practice 5:00 p.m. to 8:00 p.m. DIRTcar Late Models, DIRTcar UMP Modifieds, DIRTcar Sport Compact, DIRTcar Pro Modifieds, DIRTcar Stock Car, DIRTcar Pro Late Models | Results | | Dave Wietholder (DIRTcar UMP Modifieds) | - | - | - | - |
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| 10/1/2021 | Lincoln Speedway - Lincoln, IL DIRTcar Fall Nationals DIRTcar UMP Modifieds, DIRTcar Pro Modifieds, DIRTcar Stock Car, DIRTcar Pro Late Models | Results | | Dave Wietholder (DIRTcar UMP Modifieds) | 4th | - | - | 3rd |
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| 10/2/2021 | Lincoln Speedway - Lincoln, IL DIRTcar Fall Nationals DIRTcar Late Models, DIRTcar UMP Modifieds, DIRTcar Sport Compact, DIRTcar Pro Modifieds, DIRTcar Pro Late Models | Results | | Dave Wietholder (DIRTcar UMP Modifieds) | 4th | - | - | 6th |
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| 10/8/2021 | Lee County Speedway - Donnellson, IA Casey's Harvest Hustle Night 1 Stock Cars, A Modifieds, B Modifieds, Dirt Late Models, Sport Compact | Results | | Dave Wietholder (A Modifieds) | 1st | - | - | 23rd |
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| 10/9/2021 | Lee County Speedway - Donnellson, IA Casey's Harvest Hustle Night 2 Stock Cars, A Modifieds, B Modifieds, Dirt Late Models, Sport Compact | Results | | Dave Wietholder (A Modifieds) | 3rd | - | - | 18th |
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| 10/16/2021 | Tri City Speedway - Granite City, IL 2nd Annual Event Dirt Super Late Models: Lucas Oil MLRA DIRTcar UMP Modifieds, B Modifieds | Results | | Dave Wietholder (DIRTcar UMP Modifieds) | 4th | - | - | 6th |
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| 10/22/2021 | Tri City Speedway - Granite City, IL 7th Annual Bullet Racing Engines B-Mod Bash Twin $1500 Features, Mods, OC St Stk, OC 4-Cyl DIRTcar UMP Modifieds, DIRTcar Sport Compact, B Modifieds, Street Stocks | Results | | Dave Wietholder (DIRTcar UMP Modifieds) | DNS | - | DNS | - | | Dave Wietholder (B Modifieds) | 3rd | - | - | 4th |
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| 10/23/2021 | Tri City Speedway - Granite City, IL 7th Annual Bullet Racing Engines BMod $3K (Non-Qual $1K) Mod, OC StStk, OC 4Cyl & Sptsman(1hr early) DIRTcar UMP Modifieds, DIRTcar Sport Compact, Sportsmans, Non-Wing Outlaw, B Modifieds, Street Stocks | Results | | Dave Wietholder (DIRTcar UMP Modifieds) | 5th | - | - | 7th | | Dave Wietholder (B Modifieds) | 7th | - | - | 9th |
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| 11/20/2021 | Lee County Speedway - Donnellson, IA Casey's and Midwest Performance & Power Shiverfest Stock Cars, Dirt Mini Trucks, A Modifieds, B Modifieds, Dirt Late Models, Vintage Full Body Stock Cars, Sport Compact | Results | | Dave Wietholder (A Modifieds) | 5th | - | - | 18th |
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| 12/2/2021 | The Dome at America's Center - St. Louis, MO Castrol Gateway Dirt Nationals Midgets, Dirt Super Late Models, A Modifieds | Results | | Dave Wietholder (A Modifieds) | 7th | - | 5th | - |
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| 12/4/2021 | The Dome at America's Center - St. Louis, MO Midgets, Dirt Super Late Models, A Modifieds | Results | | Dave Wietholder (A Modifieds) | - | - | 9th | - |
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