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| 4/17/2015 | Winston Speedway - Rothbury, MI Full Program – Best Appearing Car Award For Each Class DIRTcar Late Models, DIRTcar UMP Modifieds, Factory Stocks, Stock Cars, B Modifieds, Street Stocks, Hornets | Results | | Tom Sprague Jr (DIRTcar Late Models) | 3rd | - | - | 3rd |
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| 4/24/2015 | Winston Speedway - Rothbury, MI 9th Annual All-Star Performance 50 Sunoco American Late Model Series DIRTcar Late Models, DIRTcar UMP Modifieds, Factory Stocks, Stock Cars, B Modifieds, Street Stocks, Hornets | Results | | Tom Sprague Jr (DIRTcar Late Models) | 2nd | - | - | 1st | | Tom Sprague Jr (Dirt Late Models) | - | - | - | - |
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| 5/1/2015 | Winston Speedway - Rothbury, MI Full Program - Street Stock Special presented by Mr. B's Pancake House DIRTcar Late Models, DIRTcar UMP Modifieds, Factory Stocks, Stock Cars, B Modifieds, Street Stocks, Hornets | Results | | Tom Sprague Jr (DIRTcar Late Models) | 3rd | - | - | 2nd |
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| 5/16/2015 | Merritt Speedway - Merritt, MI Crank it Up Opening Night - $6 TICKETS DIRTcar Late Models, DIRTcar UMP Modifieds, Factory Stocks, Stock Cars, Sportsmans, Lightning Sprints, Dirt Pro Trucks | Results | | Tom Sprague Jr (DIRTcar Late Models) | 1st | - | - | 5th |
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| 5/22/2015 | I-96 Speedway - Lake Odessa, MI ALMS Sunoco Late Models - Kids Night Kids Free with School ID DIRTcar Late Models, Asphalt Mini Stocks, B Modifieds, Street Stocks | Results | | Tom Sprague Jr (DIRTcar Late Models) | - | - | - | - |
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| 5/22/2015 | Winston Speedway - Rothbury, MI Full Program - Scout Night – All Scouts In Uniform Admitted FREE!! / Bomber Special DIRTcar Late Models, DIRTcar UMP Modifieds, Factory Stocks, Stock Cars, B Modifieds, Street Stocks, Hornets | Results | | Tom Sprague Jr (DIRTcar Late Models) | 1st | - | - | 2nd |
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| 5/23/2015 | Merritt Speedway - Merritt, MI Armed Forces Memorial Weekend DIRTcar Late Models, DIRTcar UMP Modifieds, Factory Stocks, Stock Cars, Sportsmans, Dirt Pro Trucks | Results | | Tom Sprague Jr (DIRTcar Late Models) | 3rd | - | - | 5th |
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| 5/29/2015 | Winston Speedway - Rothbury, MI Full Program - American Ethanol Late Model Tour DIRTcar Late Models: American Ethanol Dirt Racing Group Dirt Super Late Models, DIRTcar UMP Modifieds, Factory Stocks, Stock Cars, B Modifieds, Street Stocks, Hornets | Rain Out |
| 6/5/2015 | Winston Speedway - Rothbury, MI Full Program - American Ethanol Late Model Tour - Warrior Special DIRTcar Late Models: American Ethanol Dirt Racing Group DIRTcar UMP Modifieds, Factory Stocks, Stock Cars, B Modifieds, Street Stocks, Hornets | Results | | Tom Sprague Jr (DIRTcar Late Models) | 2nd | - | - | 6th |
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| 6/19/2015 | Winston Speedway - Rothbury, MI Full Program - Street Stock Special Presented by Grasmeyer Bros. L.LC. / Late Models $1000 to Win DIRTcar Late Models, DIRTcar UMP Modifieds, Factory Stocks, Stock Cars, B Modifieds, Street Stocks, Hornets | Results | | Tom Sprague Jr (DIRTcar Late Models) | 4th | - | - | 1st |
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| 6/26/2015 | Winston Speedway - Rothbury, MI Kids Night -Fun and Games, Bike Giveaways & More / Roll Over Contest DIRTcar Late Models, DIRTcar UMP Modifieds, Factory Stocks, Stock Cars, B Modifieds, Street Stocks, Hornets | Results | | Tom Sprague Jr (DIRTcar Late Models) | 1st | - | - | 11th |
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| 7/3/2015 | Winston Speedway - Rothbury, MI Full Program - Fireworks!!! - Street Stock Special Presented by APS Performance Collison DIRTcar Late Models, DIRTcar UMP Modifieds, Factory Stocks, Stock Cars, B Modifieds, Street Stocks, Hornets | Results | | Tom Sprague Jr (DIRTcar Late Models) | - | - | - | - | | Tom Sprague Jr (DIRTcar UMP Modifieds) | 5th | - | - | 2nd |
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| 7/17/2015 | Winston Speedway - Rothbury, MI Full Program - Bomber Special Tim Epplett Memorial - Presented by Bolduc's Complete Automotive DIRTcar Late Models, DIRTcar UMP Modifieds, Factory Stocks, Stock Cars, B Modifieds, Street Stocks, Hornets | Results | | Tom Sprague Jr (DIRTcar UMP Modifieds) | 2nd | - | - | 11th |
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| 7/31/2015 | Winston Speedway - Rothbury, MI Michigan Auto Racing Fan Club Night DIRTcar Late Models, DIRTcar UMP Modifieds, Factory Stocks, Stock Cars, B Modifieds, Street Stocks, Hornets | Results | | Tom Sprague Jr (DIRTcar Late Models) | 2nd | - | - | 11th |
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| 8/14/2015 | Winston Speedway - Rothbury, MI Fan Appreciation Night- UMP Modified Special Presented by Port City Racecars DIRTcar Late Models, DIRTcar UMP Modifieds, Factory Stocks, Stock Cars, B Modifieds, Street Stocks, Hornets | Results | | Tom Sprague Jr (DIRTcar Late Models) | 2nd | - | - | 5th |
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| 8/21/2015 | Winston Speedway - Rothbury, MI Full Program - American Ethanol Late Model Tour DIRTcar Late Models, DIRTcar UMP Modifieds, Factory Stocks, Stock Cars, B Modifieds, Street Stocks, Hornets | Results | | Tom Sprague Jr (DIRTcar Late Models) | 4th | - | - | 16th |
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| 9/4/2015 | Winston Speedway - Rothbury, MI Full Program - Stock Car Special / MI Dirt Mod Special / 4 Cyl. Special DIRTcar Late Models, DIRTcar UMP Modifieds, Factory Stocks, Stock Cars, B Modifieds | Results | | Tom Sprague Jr (DIRTcar Late Models) | 1st | - | - | 2nd |
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