| | Heat | Dash | B Feature | A Feature |
|---|
|
|---|
| 4/28/2018 | Plymouth Speedway - Plymouth, IN Cabin Fever and Fireworks DIRTcar UMP Modifieds, Super Sports, Stock Non-Wing, Street Stocks, Winged Crate Sprints | Results | | Zack Clark (Stock Non-Wing) | 4th | - | - | 18th |
|
| 5/19/2018 | Plymouth Speedway - Plymouth, IN School Team Spirit Night DIRTcar UMP Modifieds, Super Sports, Stock Non-Wing, Street Stocks, Winged Crate Sprints, Mini Wedge | Results | | Zack Clark (Stock Non-Wing) | 1st | - | - | 14th |
|
| 6/2/2018 | Plymouth Speedway - Plymouth, IN Kosciusko Night & Autograph Session DIRTcar UMP Modifieds, Super Sports, Stock Non-Wing, Street Stocks, Winged Crate Sprints | Results | | Zack Clark (Stock Non-Wing) | DNS | - | 4th | 21st |
|
| 6/9/2018 | Plymouth Speedway - Plymouth, IN Indiana Double Header Night 2 360 Sprints - Winged: GLSS-Great Lakes Super Sprints DIRTcar UMP Modifieds, Stock Non-Wing, Street Stocks | Results | | Zack Clark (Stock Non-Wing) | 6th | - | 2nd | 13th |
|
| 6/16/2018 | Plymouth Speedway - Plymouth, IN Dad's Night DIRTcar UMP Modifieds, Super Sports, Stock Non-Wing, Street Stocks, Winged Crate Sprints | Results | | Zack Clark (Stock Non-Wing) | 2nd | - | - | 18th |
|
| 6/23/2018 | Plymouth Speedway - Plymouth, IN Elkhart County Night DIRTcar UMP Modifieds, Super Sports, Stock Non-Wing, Street Stocks, Winged Crate Sprints, Mini Wedge | Results | | Zack Clark (Stock Non-Wing) | 6th | - | 3rd | 10th |
|
| 7/7/2018 | Plymouth Speedway - Plymouth, IN Boy Scouts & Girl Scouts Night DIRTcar UMP Modifieds, Super Sports, Stock Non-Wing, Street Stocks, Winged Crate Sprints | Results | | Zack Clark (Stock Non-Wing) | 7th | - | 5th | 18th |
|
| 7/14/2018 | Plymouth Speedway - Plymouth, IN Stark County Night DIRTcar UMP Modifieds, Super Sports, Stock Non-Wing, Street Stocks, Winged Crate Sprints | Results | | Zack Clark (Stock Non-Wing) | 6th | - | - | 13th |
|
| 7/28/2018 | Plymouth Speedway - Plymouth, IN Fulton County Night DIRTcar UMP Modifieds, Super Sports, Stock Non-Wing, Street Stocks, Winged Crate Sprints | Results | | Zack Clark (Stock Non-Wing) | 6th | - | 4th | 15th |
|
| 8/4/2018 | Plymouth Speedway - Plymouth, IN Michigan/Indiana Challenge Wkd Night 2 360 Sprints - Winged: GLSS-Great Lakes Super Sprints DIRTcar UMP Modifieds, Stock Non-Wing, Street Stocks | Results | | Zack Clark (Stock Non-Wing) | 5th | - | - | 6th |
|
| 8/11/2018 | Plymouth Speedway - Plymouth, IN Riley Children’s Hospital Night DIRTcar UMP Modifieds, Asphalt Mini Stocks, Super Sports, Stock Non-Wing, Street Stocks, Winged Crate Sprints | Results | | Zack Clark (Stock Non-Wing) | 7th | - | 4th | 17th |
|
| 8/18/2018 | Plymouth Speedway - Plymouth, IN Championship Night Final Points DIRTcar UMP Modifieds, Super Sports, Stock Non-Wing, Street Stocks, Winged Crate Sprints | Results | | Zack Clark (Stock Non-Wing) | 8th | - | 9th | - |
|