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| 1/6/2018 | Arizona Speedway - Queen Creek, AZ Wild West Shootout Round 1 Dirt Super Late Models, A Modifieds, B Modifieds | Results | | Mark Harrison (B Modifieds) | 9th | - | 5th | - |
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| 1/7/2018 | Arizona Speedway - Queen Creek, AZ Wild West Shootout Round 2 Dirt Super Late Models, A Modifieds, B Modifieds | Results | | Mark Harrison (B Modifieds) | 10th | - | 4th | 14th |
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| 1/13/2018 | Cocopah Speedway - Somerton, AZ CSRS Round 1 Hobby Stocks, Stock Cars, A Modifieds, B Modifieds | Results | | Mark Harrison (B Modifieds) | 5th (DNF) | - | - | 10th (DNF) |
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| 2/2/2018 | Cocopah Speedway - Somerton, AZ Cactus Clash Hobby Stocks, Stock Cars, A Modifieds, B Modifieds | Results | | Mark Harrison (B Modifieds) | 2nd | - | - | 3rd |
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| 2/3/2018 | Cocopah Speedway - Somerton, AZ Cactus Clash Hobby Stocks, Stock Cars, A Modifieds, B Modifieds | Results | | Mark Harrison (B Modifieds) | 4th | - | - | 5th |
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| 2/9/2018 | Arizona Speedway - Queen Creek, AZ AZ MOD Tour A Modifieds: IMCA Arizona Dirt Tour Dirt Super Late Models, B Modifieds | Results | | Mark Harrison (B Modifieds) | 5th | - | 1st | 16th |
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| 2/10/2018 | Arizona Speedway - Queen Creek, AZ AZ MOD Tour A Modifieds: IMCA Arizona Dirt Tour Dirt Super Late Models, B Modifieds | Results | | Mark Harrison (B Modifieds) | 3rd | - | - | 10th |
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| 2/11/2018 | Central Arizona Raceway - Casa Grande, AZ A Modifieds: IMCA Arizona Dirt Tour Dirt Super Late Models, B Modifieds | Results | | Mark Harrison (B Modifieds) | 5th | - | 4th | 16th |
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| 2/12/2018 | Central Arizona Raceway - Casa Grande, AZ A Modifieds: IMCA Arizona Dirt Tour Dirt Super Late Models, B Modifieds | Results | | Mark Harrison (B Modifieds) | 10th | - | 8th | 11th |
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| 2/15/2018 | Canyon Speedway Park - Peoria, AZ Arizona Mod Tour Round 5 A Modifieds: IMCA Arizona Dirt Tour B Modifieds | Results | | Mark Harrison (B Modifieds) | 3rd | - | - | 22nd |
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| 2/16/2018 | Cocopah Speedway - Somerton, AZ AZ Mod Tour Night 1 A Modifieds: IMCA Arizona Dirt Tour Dirt Super Late Models, B Modifieds | Results | | Mark Harrison (B Modifieds) | 6th | - | - | 18th |
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| 2/17/2018 | Cocopah Speedway - Somerton, AZ AZ Mod Tour Night 2 A Modifieds: IMCA Arizona Dirt Tour Dirt Super Late Models, B Modifieds | Results | | Mark Harrison (B Modifieds) | 6th | - | 3rd | 13th |
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| 2/18/2018 | Cocopah Speedway - Somerton, AZ AZ Mod Tour Night 3 A Modifieds: IMCA Arizona Dirt Tour B Modifieds | Results | | Mark Harrison (B Modifieds) | 5th | - | - | 9th |
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| 2/24/2018 | Arizona Speedway - Queen Creek, AZ Frank Soboski Memorial Hobby Stocks, A Modifieds, B Modifieds, 600cc Modifieds, Pure Stock, Ladies - Pure Stocks, Ladies - Bombers | Results | | Mark Harrison (B Modifieds) | 4th | - | - | 6th |
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| 3/3/2018 | Arizona Speedway - Queen Creek, AZ Hobby Stocks, A Modifieds, B Modifieds, Dwarf, Pure Stock | Results | | Mark Harrison (B Modifieds) | 2nd | - | - | 3rd |
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| 3/10/2018 | Central Arizona Raceway - Casa Grande, AZ Stock Cars, A Modifieds, B Modifieds, Dwarf, Pure Stock | Results | | Mark Harrison (B Modifieds) | 3rd | - | - | 6th |
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| 3/17/2018 | Arizona Speedway - Queen Creek, AZ Hobby Stocks, B Modifieds, 360 Sprints - Non-Winged, 600cc Modifieds, Pure Stock | Results | | Mark Harrison (B Modifieds) | 2nd | - | - | 4th |
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| 4/21/2018 | Arizona Speedway - Queen Creek, AZ 360 Sprints - Winged: ASCS Southwest Region Hobby Stocks, A Modifieds, B Modifieds | Results | | Mark Harrison (B Modifieds) | 3rd | - | - | 6th |
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| 5/12/2018 | Central Arizona Raceway - Casa Grande, AZ 360 Sprints - Winged: ASCS Southwest Region 410 Sprints - Winged, A Modifieds, Restricted 'A' Class, Winged A-Class, B Modifieds, Pure Stock, Pro Dwarf | Results | | Mark Harrison (B Modifieds) | - | - | - | - |
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| 5/19/2018 | Arizona Speedway - Queen Creek, AZ Robert Horne Ford Night Hobby Stocks, B Modifieds, 360 Sprints - Non-Winged, 600cc Modifieds | Results | | Mark Harrison (B Modifieds) | 1st | - | - | 2nd |
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| 5/26/2018 | Arizona Speedway - Queen Creek, AZ John Morris Classic Hobby Stocks, A Modifieds, B Modifieds, Dirt Late Models, Pure Stock | Results | | Mark Harrison (B Modifieds) | 3rd | - | - | 6th |
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| 5/27/2018 | Arizona Speedway - Queen Creek, AZ John Morris Classic Hobby Stocks, A Modifieds, B Modifieds, Dirt Late Models, Pure Stock | Results | | Mark Harrison (B Modifieds) | 5th | - | - | 4th |
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| 6/9/2018 | Arizona Speedway - Queen Creek, AZ A Modifieds, B Modifieds, 360 Sprints - Non-Winged, Pure Stock | Results | | Mark Harrison (B Modifieds) | 2nd | - | - | 3rd | | Mark Harrison (Pure Stock) | - | - | - | - |
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| 6/16/2018 | Arizona Speedway - Queen Creek, AZ Hobby Stocks, A Modifieds, B Modifieds, Pure Stock, Ladies - Pure Stocks, Ladies - Bombers | Results | | Mark Harrison (B Modifieds) | 2nd | - | - | 4th |
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| 6/23/2018 | Central Arizona Raceway - Casa Grande, AZ Stock Cars, A Modifieds, B Modifieds, Pure Stock, Pro Dwarf | Results | | Mark Harrison (B Modifieds) | 3rd | - | - | 1st |
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| 7/14/2018 | Central Arizona Raceway - Casa Grande, AZ Summer Shootout Stock Cars, A Modifieds, Restricted 'A' Class, Winged A-Class, B Modifieds, Pure Stock | Results | | Mark Harrison (B Modifieds) | 2nd | - | - | 1st |
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| 8/18/2018 | Arizona Speedway - Queen Creek, AZ A Modifieds, B Modifieds, Dirt Late Models, Dwarf, 600cc Modifieds | Results | | Mark Harrison (B Modifieds) | 1st | - | - | 1st |
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| 9/1/2018 | Central Arizona Raceway - Casa Grande, AZ Hank Arnold Memorial Stock Cars, A Modifieds, Restricted 'A' Class, Winged A-Class, B Modifieds, 360 Sprints - Non-Winged, Pure Stock | Results | | Mark Harrison (B Modifieds) | 2nd | - | - | 4th |
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| 9/2/2018 | Central Arizona Raceway - Casa Grande, AZ Hank Arnold Memorial Stock Cars, A Modifieds, Restricted 'A' Class, Winged A-Class, B Modifieds, 360 Sprints - Non-Winged, Pure Stock | Results | | Mark Harrison (B Modifieds) | 2nd | - | - | 3rd |
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| 9/8/2018 | Central Arizona Raceway - Casa Grande, AZ American Heros Winged Outlaw: Power 600 Series Wing Micros A Modifieds, Restricted 'A' Class, Winged A-Class, B Modifieds, Pro Dwarf | Results | | Mark Harrison (B Modifieds) | 3rd | - | - | 4th |
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| 9/15/2018 | Arizona Speedway - Queen Creek, AZ 360 Sprints - Winged: ASCS Southwest Region Hobby Stocks, A Modifieds, B Modifieds, Pure Stock | Results | | Mark Harrison (B Modifieds) | 1st | - | - | 2nd |
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| 9/22/2018 | Central Arizona Raceway - Casa Grande, AZ Non-Winged Sprints: San Tan Ford ASCS Desert Sprint Car Series Stock Cars, B Modifieds, Dirt Late Models, 360 Sprints - Non-Winged, Pure Stock | Results | | Mark Harrison (B Modifieds) | 2nd | - | - | 2nd |
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| 10/6/2018 | Arizona Speedway - Queen Creek, AZ 360 Sprints - Winged: ASCS Southwest Region Hobby Stocks, B Modifieds, Dwarf, Pure Stock | Results | | Mark Harrison (B Modifieds) | 2nd | - | - | 1st |
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| 10/27/2018 | Central Arizona Raceway - Casa Grande, AZ Non-Wing Outlaw: Power 600 Series Non-Wing Micros Stock Cars, A Modifieds, Restricted 'A' Class, Winged A-Class, B Modifieds, 360 Sprints - Non-Winged, Pure Stock, Pro Dwarf | Results | | Mark Harrison (B Modifieds) | 8th | - | - | 6th |
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| 11/16/2018 | Central Arizona Raceway - Casa Grande, AZ Desert Thunder Winged Outlaw: Power 600 Series Wing Micros Stock Cars, A Modifieds, Restricted 'A' Class, Winged A-Class, B Modifieds, Pure Stock | Results | | Mark Harrison (B Modifieds) | 2nd | - | - | - |
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| 11/17/2018 | Central Arizona Raceway - Casa Grande, AZ Desert Thunder Winged Outlaw: Power 600 Series Wing Micros Stock Cars, A Modifieds, Restricted 'A' Class, Winged A-Class, B Modifieds, Pure Stock | Results | | Mark Harrison (B Modifieds) | 4th | - | - | - |
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| 11/18/2018 | Central Arizona Raceway - Casa Grande, AZ Desert Thunder Stock Cars, A Modifieds, B Modifieds, Pure Stock | Results | | Mark Harrison (B Modifieds) | 3rd | - | - | 8th |
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