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| 91 – Justin MacDuff |
| Nickname: J-Mac |
| Hometown: Hudson Falls, NY |
| Birthday: October 27, 1995 |
| Team: |
| Sponsor: |
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| Late Model Pro Series |
| Season Stats |
| Year | Pts | Starts | Wins | Top 5 | Top 10 | Pts | Bns | Pen | Led | Inc |
| 2024 | 30 | 2 | 0 | 0 | 2 | 256 | 0 | 0 | 0 | 0 |
| 2022 | 5 | 10 | 0 | 5 | 7 | 1302 | 0 | 0 | 0 | 48 |
| 2021 | 7 | 10 | 0 | 3 | 9 | 1332 | 0 | 0 | 0 | 49 |
| 2020 | 10 | 11 | 0 | 2 | 4 | 1100 | 6 | -10 | 0 | 62 |
| 2019 | 6 | 16 | 1 | 8 | 9 | 1321 | 12 | -6 | 208 | 52 |
| 2018 | 10 | 14 | 1 | 8 | 10 | 1132 | 20 | -36 | 212 | 46 |
| 2017 | 15 | 13 | 0 | 0 | 7 | 380 | 3 | -3 | 0 | 64 |
| 2016 | 10 | 16 | 0 | 2 | 5 | 1151 | 6 | -5 | 4 | 71 |
| 2015 | 9 | 12 | 0 | 0 | 1 | 5088 | 9 | -5 | 0 | 89 |
| Dirt Pro Series |
| Season Stats |
| Year | Pts | Starts | Wins | Top 5 | Top 10 | Pts | Bns | Pen | Led | Inc |
| 2024 | 32 | 2 | 0 | 0 | 1 | 254 | 0 | 0 | 0 | 8 |
| 2021 | 31 | 5 | 0 | 0 | 1 | 572 | 0 | 0 | 4 | 22 |
| 2021 | 7 | 8 | 1 | 2 | 6 | 662 | 0 | 0 | 7 | 44 |
| 2020 | 6 | 11 | 1 | 5 | 7 | 677 | 16 | 0 | 56 | 36 |
| 2019 | 19 | 5 | 0 | 2 | 3 | 338 | 10 | 0 | 0 | 12 |
| Les Entreprises M.P. Roy Inc. Pro Series |
| Race Results |
| Date | Race | Str | Fin | Int | Laps | Led | Inc | Pts | Bns | Pen | Total | Status |
| Oct 22, 2015 | Les Entreprises MP Roy Inc 100 | 13 | 8 | -2.999 | 100 | 0 | 4 | 36 | 0 | 0 | 36 | Running |
| Nov 5, 2015 | Hanson’s Starter Shop 100 | 21 | 23 | -31 L | 69 | 0 | 8 | 21 | 0 | -1 | 20 | Running |
| Nov 12, 2015 | BRM Slamming the Dew 100 | 20 | 25 | -64 L | 36 | 0 | 4 | 19 | 0 | 0 | 19 | Running |
| Nov 19, 2015 | Lakecity Hobbies 100 | 14 | 18 | -5.698 | 100 | 0 | 6 | 26 | 0 | 0 | 26 | Running |
| Dec 3, 2015 | Les Enterprise M.P. Roy Inc. 100 | 9 | 17 | -23 L | 77 | 0 | 4 | 27 | 0 | 0 | 27 | Running |
| Dec 10, 2015 | NHR 100 | 28 | 11 | -6.642 | 100 | 0 | 4 | 33 | 0 | 0 | 33 | Running |
| Dec 17, 2015 | HAAGTV 100 | 11 | 11 | -1.417 | 100 | 0 | 2 | 33 | 0 | 0 | 33 | Running |
| Jan 7, 2016 | Varno Construction 100 | 22 | 13 | -4.603 | 100 | 0 | 12 | 31 | 0 | -1 | 30 | Running |
| Jan 14, 2015 | Lakecity R/C Speedway 100 | 22 | 17 | -1 L | 99 | 0 | 0 | 27 | 1 | 0 | 28 | Running |
| Jan 21, 2016 | Adasign Wraps 151 | 11 | 19 | -113 L | 38 | 0 | 4 | 26 | 0 | 0 | 26 | Running |
| Jan 28, 2016 | CKF Construction 150 | 12 | 12 | -9.320 | 150 | 0 | 28 | 32 | 0 | -3 | 29 | Running |
| Feb 4, 2016 | Les Entreprises M.P. Roy Inc. 200 | 22 | 11 | -1 L | 199 | 0 | 5 | 33 | 0 | 0 | 33 | Running |
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