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| 4/3/2015 | I-80 Speedway - Greenwood, NE Spring Meltdown 360 Sprints - Winged: Malvern Bank 360 Sprints Dirt Super Late Models: Lucas Oil MLRA | Results | | Lee Grosz (360 Sprints - Winged) | 3rd | - | - | 10th |
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| 4/4/2015 | I-80 Speedway - Greenwood, NE Spring Meltdown 360 Sprints - Winged: Malvern Bank 360 Sprints 305 Sprints - Winged: SSN-Sprint Series Nebraska Dirt Super Late Models: Lucas Oil MLRA | Results | | Lee Grosz (360 Sprints - Winged) | 1st | - | - | 5th |
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| 5/1/2015 | Rapid Speedway - Rock Rapids, IA Regular Classes + MSTS 360 Sprints 360 Sprints - Winged, DIRTcar Sportsmans, Hobby Stocks, Stock Cars, B Modifieds | Results | | Lee Grosz (360 Sprints - Winged) | 1st | - | - | 1st |
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| 5/9/2015 | I-90 Speedway - Hartford, SD 360 Sprints - Winged, 305 Sprints - Winged | Results | | Lee Grosz (360 Sprints - Winged) | 1st | - | - | 1st |
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| 5/22/2015 | Jackson Motorplex - Jackson, MN Folkens Bros. Trucking Spring Nationals - $10,000 to win 410 Sprints - Winged: National Sprint League 360 Sprints - Winged | Results | | Lee Grosz (360 Sprints - Winged) | - | - | - | 1st |
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| 5/23/2015 | Rice Lake Speedway - Rice Lake, WI 360 Sprints - Non-Winged: UMSS - Traditional Sprint Car Series 360 Sprints - Winged | Results | | Lee Grosz (360 Sprints - Winged) | 2nd | 1st | - | 1st |
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| 5/24/2015 | Buffalo River Speedway - Glyndon, MN 410 Sprints - Winged: Northern Outlaw Sprint Association | Results | | Lee Grosz (410 Sprints - Winged) | - | - | - | 6th |
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| 5/30/2015 | Jackson Motorplex - Jackson, MN | Results | | Lee Grosz (360 Sprints - Winged) | 2nd | - | - | 1st |
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| 6/5/2015 | Princeton Speedway - Princeton, MN 14th Annual Billy Anderson Memorial 360 Sprints - Winged | Results | | Lee Grosz (360 Sprints - Winged) | 1st | 4th | - | 13th (DNF) |
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| 6/13/2015 | Hibbing Speedway - Hibbing, MN 5th Annual Rumble on the Range 360 Sprints - Non-Winged: UMSS - Traditional Sprint Car Series 360 Sprints - Winged | Results | | Lee Grosz (360 Sprints - Winged) | 3rd | 2nd | - | 4th |
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| 6/14/2015 | Proctor Speedway - Proctor, MN 4th Annual Twin Ports Sprint Special 360 Sprints - Non-Winged: UMSS - Traditional Sprint Car Series 360 Sprints - Winged | Results | | Lee Grosz (360 Sprints - Winged) | 3rd | 1st | - | 1st |
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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 DIRTcar Sportsmans, Hobby Stocks, Stock Cars, B Modifieds | Results | | Lee Grosz (360 Sprints - Winged) | 1st | - | - | 17th (DNF) |
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| 6/27/2015 | Deer Creek Speedway - Spring Valley, MN Midwest Power Outlaw Sprint Car Series 360 Sprints - Winged | Results | | Lee Grosz (360 Sprints - Winged) | 4th | 1st | - | 21st (DNF) |
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| 7/10/2015 | Cedar Lake Speedway - New Richmond, WI Summer Sprint Special w/Traditional Sprints 360 Sprints - Non-Winged: UMSS - Traditional Sprint Car Series 360 Sprints - Winged | Results | | Lee Grosz (360 Sprints - Winged) | 3rd | 1st | - | 3rd |
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| 7/11/2015 | Cedar Lake Speedway - New Richmond, WI World of Outlaws w/UMSS & Traditional Sprints 410 Sprints - Winged: World of Outlaws 360 Sprints - Non-Winged: UMSS - Traditional Sprint Car Series 360 Sprints - Winged | Results | | Lee Grosz (360 Sprints - Winged) | 2nd | 2nd | - | 10th |
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| 7/17/2015 | Fairmont Raceway - Fairmont, MN 360 Sprints - Winged: JSTS - Jackson Speedway Touring Series | Results | | Lee Grosz (360 Sprints - Winged) | 4th | - | - | 12th |
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| 7/18/2015 | Jackson Motorplex - Jackson, MN 360 Sprints - Winged: JSTS - Jackson Speedway Touring Series | Results | | Lee Grosz (360 Sprints - Winged) | - | - | - | 5th |
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| 7/23/2015 | Norman County Fair Raceway - Ada, MN 410 Sprints - Winged: Northern Outlaw Sprint Association | Results | | Lee Grosz (410 Sprints - Winged) | - | - | - | 2nd |
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| 7/30/2015 | I-80 Speedway - Greenwood, NE Road To Knoxville 360 Sprints - Winged: ASCS National 410 Sprints - Winged: National Sprint League | Results | | Lee Grosz (360 Sprints - Winged) | 1st | - | - | 11th |
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| 7/31/2015 | I-80 Speedway - Greenwood, NE "Road to Knoxville" $10,000 to win 360 Sprints - Winged: ASCS National 410 Sprints - Winged: National Sprint League | Results | | Lee Grosz (360 Sprints - Winged) | 6th | - | 2nd | 11th |
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| 8/6/2015 | Knoxville Raceway - Knoxville, IA Arnold Motor Supply 360 Nationals 360 Sprints - Winged: ASCS National | Results | | Lee Grosz (360 Sprints - Winged) | 2nd | - | - | 22nd |
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| 8/8/2015 | Knoxville Raceway - Knoxville, IA Arnold Motor Supply 360 Nationals 360 Sprints - Winged: ASCS National | Results | | Lee Grosz (360 Sprints - Winged) | - | - | 17th | - |
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| 9/4/2015 | Jackson Motorplex - Jackson, MN Jackson Nationals *National Sprint Car Museum Madness Night 410 Sprints - Winged: National Sprint League 360 Sprints - Winged | Results | | Lee Grosz (360 Sprints - Winged) | - | - | - | 4th |
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| 9/11/2015 | St. Croix Speedway - St. Croix Falls, WI 23rd Annual Kouba Memorial & Midwest Power Outlaw Sprint Car Series Winged Outlaw: Minnesota Micro Sprints 360 Sprints - Non-Winged: UMSS - Traditional Sprint Car Series Vintage Modifieds: Northern Vintage Stockcar Racers 360 Sprints - Winged, Winged A-Class, Vintage Full Body Stock Cars | Results | | Lee Grosz (360 Sprints - Winged) | 3rd | - | - | 7th |
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| 9/12/2015 | Cedar Lake Speedway - New Richmond, WI Jerry Richert Memorial with IRA 410 Sprints - Winged: IRA Interstate Racing Association with National Sprint League 360 Sprints - Non-Winged: UMSS - Traditional Sprint Car Series 360 Sprints - Winged | Results | | Lee Grosz (360 Sprints - Winged) | 3rd | 5th | - | 6th |
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| 9/26/2015 | Park Jefferson International Speedway - Jefferson, SD Open Wheel Fest Featuring Nebraska 360 vs MSTS 360 Sprints - Sprints and Mods! 360 Sprints - Winged: Malvern Bank 360 Sprints A Modifieds, B Modifieds | Results | | Lee Grosz (360 Sprints - Winged) | 3rd | - | - | 2nd |
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