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| 5/2/2015 | Cedar Lake Speedway - New Richmond, WI UMSS Season Opener - Spring Sprint Special 360 Sprints - Winged | Results | | Mike Mueller (360 Sprints - Winged) | 2nd | 5th | - | 7th |
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| 5/8/2015 | St. Croix Speedway - St. Croix Falls, WI Season Opener for Traditional Sprints Winged Outlaw: Minnesota Micro Sprints 360 Sprints - Non-Winged: UMSS - Traditional Sprint Car Series DIRTcar Sport Compact, Stock Cars, A Modifieds, B Modifieds | Results | | Mike Mueller (360 Sprints - Non-Winged) | 5th | - | - | 8th |
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| 5/22/2015 | St. Croix Speedway - St. Croix Falls, WI 4th Annual DaveyTabor Memorial Winged Outlaw: Minnesota Micro Sprints 360 Sprints - Non-Winged: UMSS - Traditional Sprint Car Series 360 Sprints - Winged, DIRTcar Sport Compact, Stock Cars, Winged A-Class, B Modifieds | Results | | Mike Mueller (Winged Outlaw) | 4th | - | - | 3rd | | Mike Mueller (360 Sprints - Non-Winged) | 3rd | - | - | 6th |
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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 | | Mike Mueller (360 Sprints - Non-Winged) | 2nd | - | - | 4th |
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| 6/5/2015 | St. Croix Speedway - St. Croix Falls, WI Winged Outlaw: Minnesota Micro Sprints 360 Sprints - Non-Winged: UMSS - Traditional Sprint Car Series Vintage Modifieds: Northern Vintage Stockcar Racers DIRTcar Sport Compact, Stock Cars, A Modifieds, B Modifieds, Vintage Full Body Stock Cars | Results | | Mike Mueller (360 Sprints - Non-Winged) | 5th | - | - | 8th |
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| 6/12/2015 | St. Croix Speedway - St. Croix Falls, WI Winged Outlaw: Minnesota Micro Sprints 360 Sprints - Non-Winged: UMSS - Traditional Sprint Car Series DIRTcar Sport Compact, Stock Cars, A Modifieds, Winged A-Class, B Modifieds | Results | | Mike Mueller (360 Sprints - Non-Winged) | 1st | - | - | 8th |
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| 6/13/2015 | Hibbing Raceway - Hibbing, MN 5th Annual Rumble on the Range 360 Sprints - Non-Winged: UMSS - Traditional Sprint Car Series 360 Sprints - Winged | Results | | Mike Mueller (360 Sprints - Winged) | 7th | 6th | - | 12th | | Mike Mueller (360 Sprints - Non-Winged) | 4th | - | - | 5th |
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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 | | Mike Mueller (360 Sprints - Winged) | 5th | 5th | - | 10th | | Mike Mueller (360 Sprints - Non-Winged) | 1st | - | - | 2nd |
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| 6/19/2015 | St. Croix Speedway - St. Croix Falls, WI Winged Outlaw: Minnesota Micro Sprints 360 Sprints - Non-Winged: UMSS - Traditional Sprint Car Series DIRTcar Sport Compact, Stock Cars, A Modifieds, B Modifieds | Results | | Mike Mueller (360 Sprints - Non-Winged) | 3rd | - | - | 3rd |
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| 6/26/2015 | St. Croix Speedway - St. Croix Falls, WI Winged Outlaw: Minnesota Micro Sprints 360 Sprints - Non-Winged: UMSS - Traditional Sprint Car Series DIRTcar Sport Compact, Stock Cars, A Modifieds, B Modifieds | Results | | Mike Mueller (360 Sprints - Non-Winged) | 2nd | - | - | 7th |
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| 7/3/2015 | St. Croix Speedway - St. Croix Falls, WI Winged Outlaw: Minnesota Micro Sprints 360 Sprints - Non-Winged: UMSS - Traditional Sprint Car Series Vintage Modifieds: Northern Vintage Stockcar Racers DIRTcar Sport Compact, Stock Cars, B Modifieds, Vintage Full Body Stock Cars | Results | | Mike Mueller (360 Sprints - Non-Winged) | 3rd | - | - | 5th |
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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 | | Mike Mueller (360 Sprints - Non-Winged) | 2nd | - | - | 8th |
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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 | | Mike Mueller (360 Sprints - Non-Winged) | 2nd | - | - | 6th |
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| 7/17/2015 | St. Croix Speedway - St. Croix Falls, WI Winged Outlaw: Minnesota Micro Sprints 360 Sprints - Non-Winged: UMSS - Traditional Sprint Car Series DIRTcar Sport Compact, Stock Cars, A Modifieds, B Modifieds | Results | | Mike Mueller (360 Sprints - Non-Winged) | 3rd | - | - | 10th |
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| 7/23/2015 | Red Cedar Speedway - Menomonie, WI Dunn County Fair Special 360 Sprints - Non-Winged: UMSS - Traditional Sprint Car Series | Results | | Mike Mueller (360 Sprints - Non-Winged) | 1st | 2nd | - | 8th |
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| 7/24/2015 | St. Croix Speedway - St. Croix Falls, WI 3rd Annual UMSS Dan Grams Memorial Winged Outlaw: Minnesota Micro Sprints 360 Sprints - Non-Winged: UMSS - Traditional Sprint Car Series 360 Sprints - Winged, DIRTcar Sport Compact, Stock Cars, Winged A-Class, B Modifieds | Results | | Mike Mueller (360 Sprints - Non-Winged) | 1st | - | - | 4th |
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| 7/25/2015 | Rice Lake Speedway - Rice Lake, WI 360 Sprints - Non-Winged: UMSS - Traditional Sprint Car Series 360 Sprints - Winged | Results | | Mike Mueller (360 Sprints - Winged) | 6th | 5th | - | 8th | | Mike Mueller (360 Sprints - Non-Winged) | 1st | - | - | 2nd |
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| 7/31/2015 | St. Croix Speedway - St. Croix Falls, WI Winged Outlaw: Minnesota Micro Sprints 360 Sprints - Non-Winged: UMSS - Traditional Sprint Car Series DIRTcar Sport Compact, Stock Cars, Winged A-Class, B Modifieds | Results | | Mike Mueller (360 Sprints - Non-Winged) | 3rd | - | - | 5th |
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| 8/2/2015 | Granite City Motor Park - Sauk Rapids, MN Midwest Power Outlaw Sprint Car Series 360 Sprints - Non-Winged: UMSS - Traditional Sprint Car Series 360 Sprints - Winged | Results | | Mike Mueller (360 Sprints - Non-Winged) | 1st | - | - | 6th |
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| 8/14/2015 | St. Croix Speedway - St. Croix Falls, WI Winged Outlaw: Minnesota Micro Sprints 360 Sprints - Non-Winged: UMSS - Traditional Sprint Car Series DIRTcar Sport Compact, Stock Cars, B Modifieds | Results | | Mike Mueller (360 Sprints - Non-Winged) | 1st | - | - | 8th |
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| 8/21/2015 | Princeton Speedway - Princeton, MN 23rd Annual (Ethel) Kouba Memorial & Minnesota Summer Heat Series 360 Sprints - Non-Winged: UMSS - Traditional Sprint Car Series 360 Sprints - Winged | Results | | Mike Mueller (360 Sprints - Non-Winged) | 3rd | - | - | 2nd |
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| 8/28/2015 | St. Croix Speedway - St. Croix Falls, WI 4th Annual Open Wheel Nationals 360 Sprints - Winged: Sprint Invaders 360 Sprints - Non-Winged: UMSS - Traditional Sprint Car Series A Modifieds, B Modifieds | Results | | Mike Mueller (B Modifieds) | DNS | - | 7th | 23rd (DNF) | | Mike Mueller (360 Sprints - Non-Winged) | 8th (DNF) | - | - | 7th |
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| 9/4/2015 | St. Croix Speedway - St. Croix Falls, WI Bull Ring Blast Winged Outlaw: Minnesota Micro Sprints 360 Sprints - Non-Winged: UMSS - Traditional Sprint Car Series DIRTcar Late Models, DIRTcar Sport Compact, Stock Cars, A Modifieds, B Modifieds, Street Stocks | Results | | Mike Mueller (360 Sprints - Non-Winged) | 3rd | - | - | 5th |
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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 | | Mike Mueller (360 Sprints - Non-Winged) | 2nd | 7th | - | 10th |
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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 | | Mike Mueller (360 Sprints - Non-Winged) | 3rd | - | - | 4th |
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| 10/24/2015 | Ogilvie Raceway - Ogilvie, MN 5th Annual Topless Nationals 360 Sprints - Non-Winged: UMSS - Traditional Sprint Car Series | Results | | Mike Mueller (360 Sprints - Non-Winged) | 2nd | - | - | 2nd |
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