| | Heat | Dash | B Feature | A Feature |
|---|
|
|---|
| 4/25/2015 | Grays Harbor Raceway - Elma, WA Season Opener Grays Harbor Racing Series 360 Sprints - Winged, Midgets, A Modifieds, Street Stocks, Hornets | Results | | Michael Vollbrecht (Midgets) | 3rd | - | - | 4th |
|
| 5/2/2015 | Skagit Speedway - Burlington, WA Summer Thunder Sprint Series presented by Here 2 Wire & Finishline Graphics 360 Sprints - Winged: Summer Thunder Series with Summer Thunder Sprint Series Sprint Cars, Midgets, A Modifieds | Results | | Michael Vollbrecht (Midgets) | 4th | - | - | 12th |
|
| 5/16/2015 | Grays Harbor Raceway - Elma, WA Round 4 Grays Harbor Racing Series 360 Sprints - Non-Winged: WSS - Wingless Sprint Series with ODSS-Oregon Double Shot Series Midgets, Street Stocks, Hornets | Results | | Michael Vollbrecht (Midgets) | 4th | - | - | 2nd |
|
| 5/23/2015 | Grays Harbor Raceway - Elma, WA Round 5 Grays Harbor Racing Series 360 Sprints - Winged, Midgets, Dirt Super Late Models, A Modifieds, Street Stocks, Hornets | Results | | Michael Vollbrecht (Midgets) | 2nd | - | - | 4th |
|
| 5/30/2015 | Skagit Speedway - Burlington, WA ROUND SEVEN Dwayne Lane Auto Centers Racing Series 360 Sprints - Winged, Midgets, Hornets | Results | | Michael Vollbrecht (Midgets) | 3rd | - | - | 5th |
|
| 6/13/2015 | Grays Harbor Raceway - Elma, WA Round 8 Grays Harbor Racing Series A Modifieds: Washington Modified Tour 360 Sprints - Non-Winged: WSS - Wingless Sprint Series with ODSS-Oregon Double Shot Series Midgets, Vintage Modifieds, Hornets | Results | | Michael Vollbrecht (Midgets) | 1st | - | - | 5th |
|
| 6/20/2015 | Skagit Speedway - Burlington, WA ROUND TEN | Dwayne Lane Auto Centers Racing Series| STUNT SHOW 410 Sprints - Winged, Sportsman Sprints, Midgets | Results | | Michael Vollbrecht (Midgets) | 4th | - | - | 15th |
|
| 6/26/2015 | Skagit Speedway - Burlington, WA Jim Raper Memorial Dirt Cup 360 Sprints - Winged: ASCS National with Summer Thunder Series, Summer Thunder Sprint Series Midgets | Results | | Michael Vollbrecht (Midgets) | 3rd | - | - | 11th |
|
| 7/3/2015 | Grays Harbor Raceway - Elma, WA Fred Brownfield Classic 360 Sprints - Winged: ASCS National with Summer Thunder Series, Summer Thunder Sprint Series Midgets | Results | | Michael Vollbrecht (Midgets) | 2nd | - | - | 10th |
|
| 7/4/2015 | Grays Harbor Raceway - Elma, WA Fred Brownfield Classic 360 Sprints - Winged: ASCS National with Summer Thunder Series, Summer Thunder Sprint Series Midgets | Results | | Michael Vollbrecht (Midgets) | 5th | - | - | 5th |
|
| 7/11/2015 | Grays Harbor Raceway - Elma, WA Mid Season Championships and Giant Firewoks Show 360 Sprints - Winged, Midgets, Dirt Super Late Models, A Modifieds, Street Stocks, Hornets | Results | | Michael Vollbrecht (Midgets) | - | 4th | - | 10th |
|
| 7/25/2015 | Skagit Speedway - Burlington, WA BOB'S BURGERS & BREW SUMMER NATIONALS FINALE 360 Sprints - Winged: Summer Thunder Series with Summer Thunder Sprint Series Midgets, Hornets | Results | | Michael Vollbrecht (Midgets) | 2nd | - | - | 3rd |
|
| 8/1/2015 | Sunset Speedway Park - Banks, OR 360 Sprints - Non-Winged: WSS - Wingless Sprint Series with ODSS-Oregon Double Shot Series Midgets, DIRTcar Factory Stock, Dwarf | Results | | Michael Vollbrecht (Midgets) | - | - | - | 1st |
|
| 8/15/2015 | Grays Harbor Raceway - Elma, WA Rolling Thunder Big Rigs! Midgets, A Modifieds | Results | | Michael Vollbrecht (Midgets) | 1st | - | - | 1st |
|
| 8/22/2015 | Cottage Grove Speedway - Cottage Grove, OR LOGGER'S CUP-$1,500.00 TO WIN LATE MODELS 360 Sprints - Non-Winged: WSS - Wingless Sprint Series with ODSS-Oregon Double Shot Series Midgets, Dirt Super Late Models, B Modifieds, Street Stocks | Results | | Michael Vollbrecht (Midgets) | 1st | - | - | 5th |
|