Count: 35
| Race Date | Class | Series | Track | Race | Car Count | Winner | Start | Story |
| Saturday, October 5, 2024 | Wing | WoO | Williams Grove,PA | National Open | 56 | Carson Macedo | 2 | NATTY O NUMBER TWO: Carson Macedo Survives Haudenschild’s Last Gasp for Second National Open Title |
| Saturday, September 30, 2023 | Wing | WoO | Williams Grove,PA | National Open | 52 | Brent Marks | 1 | MARKSMAN: BRENT MARKS HUNTS DOWN PITTMAN FOR SECOND WILLIAMS GROVE NATIONAL OPEN TRIUMPH |
| Saturday, October 22, 2022 | Wing | WoO | Williams Grove,PA | National Open | 44 | Lance DeWease | 1 | NOT DONE YET: Lance Dewease Banks $75,000 With Fifth-Career National Open Title |
| Saturday, October 2, 2021 | Wing | WoO | Williams Grove,PA | National Open | 48 | Carson Macedo | 6 | CARSON’S GROVE: MACEDO OUTRUNS SCHUCHART FOR $75,000 IN NATIONAL OPEN THRILLER |
| Saturday, October 3, 2020 | Wing | WoO | Williams Grove,PA | National Open | 54 | Donny Schatz | 4 | JUST WHAT HE NEEDED: Donny Schatz claims sixth National Open title, $75K top prize |
| Saturday, October 5, 2019 | Wing | WoO | Williams Grove,PA | National Open | 49 | Brent Marks | 2 | Brent Marks wins the National Open at Williams Grove Speedway |
| Saturday, September 29, 2018 | Wing | WoO | Williams Grove,PA | National Open | 49 | Lance DeWease | 2 | Lance Dewease Wins Emotional Williams Grove National Open Worth $56,000 |
| Saturday, September 30, 2017 | Wing | WoO | Williams Grove,PA | National Open | 42 | David Gravel | 1 | David Gravel, CJB Pocket $50,000 in Williams Grove National Open Victory |
| Friday, October 14, 2016 | Wing | WoO | Williams Grove,PA | National Open | 48 | Danny Dietrich | 6 | Dietrich with Dream Win at Williams Grove |
| Sunday, October 4, 2015 | Wing | WoO | Williams Grove,PA | National Open | 49 | Stevie Smith | 2 | Stevie Smith Scores First National Open Win in 24 Years |
| Saturday, October 4, 2014 | Wing | WoO | Williams Grove,PA | National Open | 55 | David Gravel | 1 | David Gravel wins WoO National Open at Williams Grove |
| Saturday, October 5, 2013 | Wing | WoO | Williams Grove,PA | National Open | 62 | Fred Rahmer | 2 | Fred Rahmer wins WoO at Williams Grove |
| Saturday, September 29, 2012 | Wing | WoO | Williams Grove,PA | National Open | 53 | Donny Schatz | 2 | Donny Schatz wins WoO at Williams Grove |
| Saturday, October 1, 2011 | Wing | WoO | Williams Grove,PA | National Open | 53 | Jason Meyers | 5 | Meyers Claims $50,000 to Win National Open at Williams Grove |
| Saturday, October 2, 2010 | Wing | WoO | Williams Grove,PA | National Open | 56 | Sammy Swindell | 7 | Sammy Swindell wins WoO at Williams Grove |
| Saturday, October 3, 2009 | Wing | WoO | Williams Grove,PA | National Open | 59 | Greg Hodnett | 1 | Greg Hodnett wins WoO at Williams Grove |
| Saturday, September 29, 2007 | Wing | WoO | Williams Grove,PA | National Open | 54 | Donny Schatz | 1 | |
| Saturday, September 30, 2006 | Wing | WoO | Williams Grove,PA | National Open | 58 | Doug Esh | 2 | |
| Saturday, October 1, 2005 | Wing | WoO | Williams Grove,PA | National Open | 51 | Donny Schatz | 5 | |
| Saturday, October 2, 2004 | Wing | WoO | Williams Grove,PA | National Open | 47 | Donny Schatz | | |
| Saturday, October 4, 2003 | Wing | WoO | Williams Grove,PA | National Open | 45 | Steve Kinser | 3 | |
| Saturday, September 28, 2002 | Wing | WoO | Williams Grove,PA | National Open | 38 | Lance DeWease | 13 | Lance Dewease wins Williams Grove |
| Saturday, September 29, 2001 | Wing | WoO | Williams Grove,PA | National Open | 44 | Lance DeWease | 1 | Lance Dewease wins WoO at Williams Grove |
| Saturday, September 30, 2000 | Wing | WoO | Williams Grove,PA | National Open | 48 | Donny Schatz | 7 | Donny Schatz wins National Open |
| Saturday, October 2, 1999 | Wing | WoO | Williams Grove,PA | National Open | 47 | Mark Kinser | | Mark Kinser wins WoO at Williams Grove |
| Saturday, October 4, 1997 | Wing | WoO | Williams Grove,PA | National Open | 45 | Sammy Swindell | | Sammy Swindell wins WoO at Williams Grove |
| Saturday, October 5, 1996 | Wing | WoO | Williams Grove,PA | National Open | 48 | Lance DeWease | | Lance Dewease wins WoO at Williams Grove |
| Saturday, September 30, 1995 | Wing | WoO | Williams Grove,PA | National Open | 48 | Mark Kinser | | Mark Kinser wins WoO at Williams Grove |
| Saturday, October 1, 1994 | Wing | WoO | Williams Grove,PA | National Open | 43 | Steve Kinser | | Steve Kinser wins WoO at Williams Grove |
| Sunday, October 3, 1993 | Wing | WoO | Williams Grove,PA | National Open | 40 | Don Kreitz Jr | | Don Kreitz Jr wins WoO at Williams Grove |
| Saturday, October 3, 1992 | Wing | WoO | Williams Grove,PA | National Open | 51 | Steve Kinser | | Steve Kinser wins WoO at Williams Grove |
| Sunday, October 6, 1991 | Wing | WoO | Williams Grove,PA | National Open | 52 | Stevie Smith | | Stevie Smith wins WoO at Williams Grove |
| Saturday, September 29, 1990 | Wing | WoO | Williams Grove,PA | National Open | 52 | Steve Kinser | | Steve Kinser wins WoO at Williams Grove |
| Saturday, September 30, 1989 | Wing | WoO | Williams Grove,PA | National Open | 54 | Stevie Smith | | Stevie Smith wins WoO at Williams Grove |
| Sunday, September 24, 1978 | Wing | WoO | Williams Grove,PA | National Open | 28 | Kramer Williamson | | |
