Count: 27
| Race Date | Class | Series | Race | Car Count | Winner | Start | Story |
| Friday, March 27, 2015 | Wing | | Opening Day | 23 | Danny Dietrich | | Dietrich Wins Second Williams Grove Opening Day Event | |
| Friday, April 10, 2015 | Wing | | | 20 | Rodney Westhafer | | Westhafer Win In Williams Grove Sprints | |
| Friday, April 17, 2015 | Wing | | Tommy Hinnershitz Memorial | 26 | Stevie Smith | | Smith Takes Over For Marks To Win Williams Grove Tommy Spring Classic | |
| Friday, April 24, 2015 | Wing | AS | | 39 | Greg Hodnett | 3 | Hodnett Turns Back All Stars at Williams Grove | |
| Friday, May 1, 2015 | Wing | | | 23 | Brian Montieth | | Montieth Williams Grove Sprint Main | |
| Friday, May 8, 2015 | Wing | | | 31 | Brian Montieth | | Montieth Wins Second In A Row In Williams Grove Outlaw Tune Up | |
| Friday, May 15, 2015 | Wing | WoO | | 40 | Donny Schatz | 1 | Schatz Battles Hodnett for Williams Grove Win | |
| Friday, May 22, 2015 | Wing | | | 26 | Brian Montieth | | Montieth Wins Williams Grove Battle Of High Groove Titans For Third In Four | |
| Friday, May 29, 2015 | Wing | | | 19 | Greg Hodnett | | Hodnett Scores Exciting Williams Grove Sprints Win | |
| Friday, June 5, 2015 | Wing | | | 28 | Don Kreitz Jr | | Kreitz Score Exciting Williams Grove Sprint Win | |
| Friday, June 19, 2015 | Wing | | | 26 | Lucas Wolfe | | Wolfe Rockets Through Field, Scores Popular & Pleasing Williams Grove Sprints Win | |
| Friday, June 26, 2015 | Wing | | PA Speedweek | 33 | Stevie Smith | | Stevie Smith Kickstarts PA Speedweek With Williams Grove Victory | |
| Friday, July 3, 2015 | Wing | | PA Speedweek Mitch Smith Memorial | 34 | Doug Esh | | Esh Holds Off Montieth And Zearfoss For Williams Grove Speedweek Mitch Smith Memorial | |
| Friday, July 10, 2015 | Wing | | | 25 | Alan Krimes | | “Superman” Alan Krimes Wins Williams Grove Sprints | |
| Friday, July 17, 2015 | Wing | | | 26 | Stevie Smith | | Smith Is Ready For Grove Outlaws With Tune Up Victory | |
| Friday, July 24, 2015 | Wing | WoO | Summer Nationals | 39 | Danny Dietrich | 9 | Danny Dietrich Does It at Williams Grove | |
| Saturday, July 25, 2015 | Wing | WoO | Summer Nationals Morgan Cup | 39 | Stevie Smith | 4 | Stevie Smith Sweeps Williams Grove for the Posse | |
| Friday, July 31, 2015 | Wing | | | 24 | Danny Dietrich | | Dietrich Starts Ninth And Wins Again, Gets Back To Back Williams Grove Wins | |
| Friday, August 7, 2015 | Wing | | | 19 | Pat Cannon | | Cannon Breaks Through For Elusive Williams Grove Sprints Win | |
| Friday, August 21, 2015 | Wing | | | 24 | Greg Hodnett | | Hodnett And Dietrich Split Williams Grove Sprint Twin 20s | |
| Wing | | | 22 | Danny Dietrich | | Hodnett And Dietrich Split Williams Grove Sprint Twin 20s | |
| Friday, August 28, 2015 | Wing | | | 22 | Austin Hogue | | Hogue Use Last Lap Pass For Williams Grove Sprint Win | |
| Friday, September 4, 2015 | Wing | | Jack Gunn Memorial | 22 | Aaron Ott | | Ott Wins 33rd Annual Williams Grove Gunn Memorial In Attrition Filled Event | |
| Sunday, September 6, 2015 | Wing | | Billy Kimmel Memorial | 22 | Cory Haas | | CORY HAAS WINS BILLY KIMMEL MEMORIAL | |
| Friday, September 18, 2015 | Wing | | | 21 | Lucas Wolfe | | Lucas Wolfe Takes Lead From Dewease For Second Williams Grove Sprints Win | |
| Friday, September 25, 2015 | Wing | | | 24 | Stevie Smith | | STEVIE SMITH WINS WILLIAMS GROVE NATIONAL OPEN TUNE-UP | |
| Sunday, October 4, 2015 | Wing | WoO | National Open | 49 | Stevie Smith | 2 | Stevie Smith Scores First National Open Win in 24 Years | |
