| | Heat | Dash | B Feature | A Feature |
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| 5/1/2015 | Rapid Speedway - Rock Rapids, IA Regular Classes + MSTS 360 Sprints 360 Sprints - Winged: Midwest Sprint Touring Series DIRTcar Sportsmans, Hobby Stocks, Stock Cars, B Modifieds | Results | | John Lambertz (360 Sprints - Winged) | 5th | - | - | 23rd (DNF) |
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| 5/3/2015 | Huset's Speedway - Brandon, SD MSTS 360 Sprints - Winged: Midwest Sprint Touring Series Sprint Cars, Hobby Stocks, Winged A-Class, B Modifieds, Street Stocks | Results | | John Lambertz (360 Sprints - Winged) | 1st | - | - | 8th |
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| 5/9/2015 | I-90 Speedway - Hartford, SD 360 Sprints - Winged: Midwest Sprint Touring Series 305 Sprints - Winged | Results | | John Lambertz (360 Sprints - Winged) | 7th | - | - | DNS |
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| 5/30/2015 | Jackson Motorplex - Jackson, MN 360 Sprints - Winged: Midwest Sprint Touring Series | Results | | John Lambertz (360 Sprints - Winged) | 5th | - | - | 19th |
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| 5/31/2015 | Huset's Speedway - Brandon, SD Premier Racing Series presented by Pizza Ranch 410 Sprints - Winged, 305 Sprints - Winged, Sprint Cars, Hobby Stocks, B Modifieds, Street Stocks | Results | | John Lambertz (410 Sprints - Winged) | 8th | - | - | 21st (DNF) |
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| 6/13/2015 | Jackson Motorplex - Jackson, MN 360 Sprints - Winged: Midwest Sprint Touring Series | Results | | John Lambertz (360 Sprints - Winged) | 2nd | - | - | 24th (DNF) |
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| 6/26/2015 | Rapid Speedway - Rock Rapids, IA Regular Classes + MSTS 360 Sprints (Mid-Season Championship) 360 Sprints - Winged: Minnesota Mafia with Midwest Sprint Touring Series DIRTcar Sportsmans, Hobby Stocks, Stock Cars, B Modifieds | Results | | John Lambertz (360 Sprints - Winged) | 8th (DNF) | - | 7th | - |
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| 6/27/2015 | Jackson Motorplex - Jackson, MN 360 Sprints - Winged: Midwest Sprint Touring Series | Results | | John Lambertz (360 Sprints - Winged) | 4th | - | - | 14th |
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| 7/4/2015 | I-90 Speedway - Hartford, SD 360 Sprints - Winged: Midwest Sprint Touring Series 305 Sprints - Winged | Results | | John Lambertz (360 Sprints - Winged) | 1st | 2nd | - | 2nd |
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| 7/11/2015 | Jackson Motorplex - Jackson, MN 360 Sprints - Winged: Midwest Sprint Touring Series | Results | | John Lambertz (360 Sprints - Winged) | 4th | - | - | 12th |
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| 7/12/2015 | Huset's Speedway - Brandon, SD Premier Racing Series presented by Brandon Lumber Company 410 Sprints - Winged, 305 Sprints - Winged, Sprint Cars, Hobby Stocks, B Modifieds, Street Stocks | Results | | John Lambertz (410 Sprints - Winged) | 3rd | - | - | 12th |
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| 7/15/2015 | Sioux Speedway - Sioux Center, IA 6th Annual Sprint Car Showdown 360 Sprints - Winged: Midwest Sprint Touring Series Hobby Stocks, Stock Cars, B Modifieds | Results | | John Lambertz (360 Sprints - Winged) | 2nd | - | - | 13th |
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| 7/17/2015 | Fairmont Raceway - Fairmont, MN 360 Sprints - Winged: JSTS - Jackson Speedway Touring Series | Results | | John Lambertz (360 Sprints - Winged) | 7th | - | 7th (DNF) | - |
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| 7/18/2015 | Jackson Motorplex - Jackson, MN 360 Sprints - Winged: JSTS - Jackson Speedway Touring Series | Results | | John Lambertz (360 Sprints - Winged) | - | - | - | 10th |
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