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| 3/24/2021 | Humboldt Speedway - Humboldt, KS KOA and Battle Practice A Modifieds: USMTS - United States Modified Touring Series B Modifieds, USRA B-Mods, USRA Modifieds, USRA Stock Cars | Results | | Mike Harrison (A Modifieds) | - | - | - | - | | Mike Harrison (USRA Modifieds) | - | - | - | - |
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| 3/25/2021 | Humboldt Speedway - Humboldt, KS King Of America and Battle at the Bullring Night 1 A Modifieds: USMTS - United States Modified Touring Series B Modifieds, USRA B-Mods, USRA Modifieds, USRA Stock Cars | Results | | Mike Harrison (A Modifieds) | - | - | - | - | | Mike Harrison (USRA Modifieds) | 3rd | - | 6th | - |
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| 3/26/2021 | Humboldt Speedway - Humboldt, KS King Of America $5,000 to win + Battle Qualifying A Modifieds: USMTS - United States Modified Touring Series B Modifieds, USRA B-Mods, USRA Stock Cars | Results | | Mike Harrison (A Modifieds) | 8th | - | 14th | - |
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| 3/27/2021 | Humboldt Speedway - Humboldt, KS King Of America $20,000 to win, Battle at the Bullring $10,00 to win A Modifieds: USMTS - United States Modified Touring Series B Modifieds, USRA B-Mods, USRA Modifieds, USRA Stock Cars | Results | | Mike Harrison (A Modifieds) | 11th | - | 18th | - |
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| 4/2/2021 | Farmer City Raceway - Farmer City, IL Triple Qualifying Features $600 to win $100 to start Dirt Super Late Models: World of Outlaws - Late Models DIRTcar UMP Modifieds: Summit American Modified Series Street Stocks, Dirt Late Models, Pro Late Model | Results | | Mike Harrison (DIRTcar UMP Modifieds) | 15th | - | - | - |
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| 4/3/2021 | Farmer City Raceway - Farmer City, IL $2500 to win $150 to start Dirt Super Late Models: World of Outlaws - Late Models DIRTcar UMP Modifieds: Summit American Modified Series Dirt Late Models, Pro Late Model, CRUSA Dirt Late Models | Results | | Mike Harrison (DIRTcar UMP Modifieds) | - | - | DNS | - |
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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 | | Mike Harrison (DIRTcar UMP Modifieds) | 1st | - | - | 1st |
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| 5/1/2021 | Fairbury Speedway - Fairbury, IL FALS Cup Opening Night DIRTcar Late Models, DIRTcar UMP Modifieds, DIRTcar Sportsmans, B Modifieds, Street Stocks | Results | | Mike Harrison (DIRTcar UMP Modifieds) | 1st | - | - | 1st |
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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 | | Mike Harrison (DIRTcar UMP Modifieds) | 3rd | - | - | 4th |
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| 5/8/2021 | Highland Speedway - Highland, IL Nicci Egbert/Chris Bargetzi Memorial Race DIRTcar Late Models, DIRTcar UMP Modifieds, B Modifieds, Street Stocks | Results | | Mike Harrison (DIRTcar UMP Modifieds) | 7th (DNF) | - | - | 1st |
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| 5/14/2021 | Farmer City Raceway - Farmer City, IL Farmer City 74 DIRTcar UMP Modifieds, Street Stocks, Dirt Late Models, Pro Late Model | Results | | Mike Harrison (DIRTcar UMP Modifieds) | 1st | - | - | 3rd |
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| 5/15/2021 | Fairbury Speedway - Fairbury, IL Spring Showcase DIRTcar Late Models, DIRTcar UMP Modifieds | Results | | Mike Harrison (DIRTcar UMP Modifieds) | 1st | - | - | 1st |
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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 | | Mike Harrison (DIRTcar UMP Modifieds) | 1st | - | - | 1st |
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| 5/22/2021 | Highland Speedway - Highland, IL DIRTcar Late Models, DIRTcar UMP Modifieds, B Modifieds, Street Stocks | Results | | Mike Harrison (DIRTcar UMP Modifieds) | 1st | - | - | 1st |
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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 | | Mike Harrison (DIRTcar UMP Modifieds) | 2nd | - | - | 6th |
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| 5/29/2021 | Brownstown Bullring - Brownstown, IL $1500 to win $200 to start DIRTcar UMP Modifieds: Summit American Modified Series Dirt Super Late Models | Results | | Mike Harrison (DIRTcar UMP Modifieds) | 1st | - | - | 1st |
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| 5/30/2021 | Brownstown Bullring - Brownstown, IL $3000 to win $200 to start DIRTcar UMP Modifieds: Summit American Modified Series | Results | | Mike Harrison (DIRTcar UMP Modifieds) | 1st | - | - | 1st |
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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 | | Mike Harrison (DIRTcar UMP Modifieds) | 1st | - | - | 1st |
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| 6/5/2021 | Highland Speedway - Highland, IL Bi State Late Models DIRTcar Late Models, DIRTcar UMP Modifieds, Winged Outlaw, B Modifieds, Street Stocks | Results | | Mike Harrison (DIRTcar UMP Modifieds) | 1st | - | - | 1st |
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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 | | Mike Harrison (DIRTcar UMP Modifieds) | 1st | - | - | 1st |
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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 | | Mike Harrison (DIRTcar UMP Modifieds) | 3rd | - | - | 4th |
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| 6/19/2021 | Fairbury Speedway - Fairbury, IL DIRTcar Summer Nationals DIRTcar Late Models: DIRTcar Summer Nationals DIRTcar UMP Modifieds: DIRTcar Modified Nationals DIRTcar Sportsmans | Results | | Mike Harrison (DIRTcar UMP Modifieds) | 1st | - | - | 17th |
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| 7/3/2021 | Brownstown Bullring - Brownstown, IL $3000 to win $200 to start DIRTcar Late Models: DIRTcar Summer Nationals DIRTcar UMP Modifieds: DIRTcar Modified Nationals with Summit American Modified Series | Results | | Mike Harrison (DIRTcar UMP Modifieds) | 1st | - | - | 22nd |
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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 | | Mike Harrison (DIRTcar UMP Modifieds) | 1st | - | - | 2nd |
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| 7/8/2021 | Macon Speedway - Macon, IL Herald & Review 100 Featuring the Summer Nationals Hell Tour DIRTcar Late Models: DIRTcar Summer Nationals DIRTcar UMP Modifieds: DIRTcar Modified Nationals B Modifieds | Results | | Mike Harrison (DIRTcar UMP Modifieds) | 1st | - | - | 1st |
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| 7/17/2021 | Highland Speedway - Highland, IL Donnewald Distributing Night DIRTcar Late Models, DIRTcar UMP Modifieds, B Modifieds, Street Stocks | Results | | Mike Harrison (DIRTcar UMP Modifieds) | 1st | - | - | 1st |
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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 | | Mike Harrison (DIRTcar UMP Modifieds) | 1st | - | - | 1st |
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| 7/24/2021 | Lucas Oil Speedway - Wheatland, MO Weekly Show #11- Ozarks Food Harvest Food Drive Night Presented by KOLR Dirt Late Models, USRA B-Mods, USRA Modifieds, USRA Stock Cars | Results | | Mike Harrison (USRA Modifieds) | 7th (DNF) | - | - | 12th (DNF) |
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| 7/28/2021 | Highland Speedway - Highland, IL Madison County Fair Race DIRTcar Late Models, DIRTcar UMP Modifieds, B Modifieds, Street Stocks | Results | | Mike Harrison (DIRTcar UMP Modifieds) | 3rd | - | - | 1st |
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| 7/30/2021 | Fairbury Speedway - Fairbury, IL PRAIRIE DIRT CLASSIC Dirt Super Late Models: World of Outlaws - Late Models DIRTcar UMP Modifieds: DIRTcar Modified Nationals | Results | | Mike Harrison (DIRTcar UMP Modifieds) | 2nd | - | - | - |
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| 7/31/2021 | Fairbury Speedway - Fairbury, IL PRAIRIE DIRT CLASSIC Dirt Super Late Models: World of Outlaws - Late Models DIRTcar UMP Modifieds: DIRTcar Modified Nationals DIRTcar Late Models | Results | | Mike Harrison (DIRTcar UMP Modifieds) | 2nd | - | - | 19th |
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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 | | Mike Harrison (DIRTcar UMP Modifieds) | 8th | - | DNS | - |
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| 8/13/2021 | Highland Speedway - Highland, IL Summer Nationals DIRTcar Late Models: DIRTcar Summer Nationals DIRTcar UMP Modifieds: DIRTcar Modified Nationals B Modifieds, Street Stocks | Results | | Mike Harrison (DIRTcar UMP Modifieds) | 1st | - | - | 1st |
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| 8/14/2021 | Federated Auto Parts I-55 Raceway - Pevely, MO DIRTcar Summer Nationals DIRTcar Late Models: DIRTcar Summer Nationals DIRTcar UMP Modifieds: DIRTcar Modified Nationals B Modifieds | Results | | Mike Harrison (DIRTcar UMP Modifieds) | 3rd | - | - | 18th |
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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 | | Mike Harrison (DIRTcar UMP Modifieds) | 2nd | - | - | 3rd |
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| 8/21/2021 | Charleston Speedway - Charleston, IL WEEKLY RACING DIRTcar UMP Modifieds, Street Stocks, Dirt Late Models, Hornets, 600cc Modifieds, DIRTcar Pro Modifieds | Results | | Mike Harrison (DIRTcar UMP Modifieds) | 2nd | - | - | 1st |
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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 | | Mike Harrison (DIRTcar UMP Modifieds) | 3rd | - | - | 3rd |
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| 8/28/2021 | Charleston Speedway - Charleston, IL Leaf Tree Service presents The .38 SPECIAL for UMP MODIFIEDS!! DIRTcar UMP Modifieds, DIRTcar Factory Stock, Hornets | Results | | Mike Harrison (DIRTcar UMP Modifieds) | 3rd | - | - | 3rd |
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| 9/2/2021 | Farmer City Raceway - Farmer City, IL $1500 to win $200 to start DIRTcar UMP Modifieds: Summit American Modified Series Dirt Late Models | Results | | Mike Harrison (DIRTcar UMP Modifieds) | 2nd | - | - | 3rd |
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| 9/4/2021 | Fairbury Speedway - Fairbury, IL $10,000 to win $500 to start DIRTcar UMP Modifieds: Summit American Modified Series DIRTcar Late Models | Results | | Mike Harrison (DIRTcar UMP Modifieds) | 1st | - | - | 21st (DNF) |
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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 | | Mike Harrison (DIRTcar UMP Modifieds) | 2nd | - | - | 1st |
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| 9/11/2021 | Highland Speedway - Highland, IL Bi State Late Models DIRTcar Late Models, DIRTcar UMP Modifieds, B Modifieds, Street Stocks | Results | | Mike Harrison (DIRTcar UMP Modifieds) | 2nd | - | - | 1st |
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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 | | Mike Harrison (DIRTcar UMP Modifieds) | 1st | - | - | 1st |
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| 9/18/2021 | Federated Auto Parts I-55 Raceway - Pevely, MO Pepsi Nationals DIRTcar Late Models, DIRTcar UMP Modifieds, DIRTcar Sportsmans, DIRTcar Sport Compact, B Modifieds | Results | | Mike Harrison (DIRTcar UMP Modifieds) | 1st | - | - | 17th |
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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 | | Mike Harrison (DIRTcar UMP Modifieds) | 1st | - | - | 2nd |
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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 | | Mike Harrison (DIRTcar UMP Modifieds) | 1st | - | - | 23rd |
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| 9/25/2021 | Tri City Speedway - Granite City, IL 17th Annual Summit Mod Mania $5000/$500 $1K Non-Q race, LM $3000 & BMods $1000 (start 1 hr early) DIRTcar Late Models, DIRTcar UMP Modifieds, B Modifieds | Results | | Mike Harrison (DIRTcar UMP Modifieds) | - | - | 1st | 4th |
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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 | | Mike Harrison (DIRTcar UMP Modifieds) | 2nd | - | - | 2nd |
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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 | | Mike Harrison (DIRTcar UMP Modifieds) | 2nd | - | - | 3rd |
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| 10/9/2021 | Fairbury Speedway - Fairbury, IL FALS Frenzy DIRTcar Late Models, DIRTcar UMP Modifieds, Pro Late Model | Results | | Mike Harrison (DIRTcar UMP Modifieds) | 1st | - | - | 22nd (DNF) |
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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 | | Mike Harrison (DIRTcar UMP Modifieds) | 1st | - | - | 2nd |
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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 | | Mike Harrison (DIRTcar UMP Modifieds) | 4th | - | - | 6th |
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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 | | Mike Harrison (DIRTcar UMP Modifieds) | 1st | - | - | 4th |
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| 12/3/2021 | The Dome at America's Center - St. Louis, MO Castrol Gateway Dirt Nationals Midgets, Dirt Super Late Models, A Modifieds | Results | | Mike Harrison (A Modifieds) | 7th | - | 3rd | 6th |
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| 12/4/2021 | The Dome at America's Center - St. Louis, MO Midgets, Dirt Super Late Models, A Modifieds | Results | | Mike Harrison (A Modifieds) | - | - | 1st | 7th |
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