AMA 450 Supercross – Seattle
| 2024 | Cooper Webb |
| 2023 | Eli Tomac |
| 2022 | Eli Tomac |
| 2019 | Marvin Musquin |
| 2018 | Eli Tomac |
| 2017 | Marvin Musquin |
| 2014 | Ryan Villopoto |
| 2013 | Justin Barcia |
| 2012 | Andrew Short |
| 2011 | James Stewart |
| 2010 | Kevin Windham |
| 2009 | Ryan Villopoto |
| 2008 | Kevin Windham |
| 2007 | James Stewart |
| 2006 | James Stewart |
| 2005 | James Stewart |
| 1999 | Larry Ward |
| 1998 | Jeremy McGrath |
| 1997 | Doug Henry |
| 1996 | Jeremy McGrath |
| 1995 | Jeremy McGrath |
| 1994 | Mike Kiedrowski |
| 1993 | Jeremy McGrath |
| 1992 | Damon Bradshaw |
| 1991 | Jean M Bayle |
| 1990 | Larry Ward |
| 1989 | Rick Johnson |
| 1989 | Rick Johnson |
| 1988 | Rick Johnson |
| 1988 | Ron Lechien |
| 1987 | Rick Johnson |
| 1987 | Rick Johnson |
| 1986 | Jeff Ward |
| 1986 | Rick Johnson |
| 1985 | Ron Lechien |
| 1985 | Ron Lechien |
| 1984 | Jeff Ward |
| 1984 | Rick Johnson |
| 1983 | Bob Hannah |
| 1983 | Bob Hannah |
| 1982 | Dponnie Hansen |
| 1982 | Mark Barnett |
| 1981 | Darrell Schultz |
| 1981 | Darrell Schultz |
| 1980 | Mike Bell |
| 1980 | Mike Bell |
| 1979 | Mike Bell |
| 1979 | Bob Hannah |
| 1978 | Jim Ellis |
Team
| 2024 | Monster Energy Yamaha Star Racing |
| 2023 | Monster Energy Yamaha Star Racing |
| 2022 | Monster Energy Yamaha Star Racing |
| 2019 | Red Bull KTM |
| 2018 | Monster Energy Kawasaki |
| 2017 | Red Bull KTM |
| 2014 | Monster Energy Kawasaki |
| 2013 | Team Honda Muscle Milk |
| 2012 | L & MC Racing Honda |
| 2011 | San Manuel Racing Yamaha |
| 2010 | Geico Honda / Factory Connection |
| 2009 | Monster Energy Kawasaki |
| 2008 | Torco Racing Fuels Honda |
| 2007 | Monster Energy Kawasaki |
| 2006 | Kawasaki Motocross Racing |
| 2005 | Team Chevy Trucks Kawasaki |
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Qualifying
| 2024 | 0:52.115 | Jett Lawrence |
| 2023 | 0:50.704 | Chase Sexton |
| 2022 | 0:47.915 | Malcolm Stewart |
| 2019 | 0:45.281 | Dean Wilson |
| 2018 | 1:13.203 | Jason Anderson |
| 2017 | 0:57.219 | Cooper Webb |
| 2014 | 0:54.384 | Ken Roczen |
| 2013 | 0:54.074 | Ryan Dungey |
| 2012 | 0:53.735 | Mike Alessi |
| 2011 | 0:52.035 | Kevin Windham |
| 2010 | 0:58.044 | Joshua Hill |
| 2009 | 0:53.162 | James Stewart |
| 2008 | 0:51.491 | Chad Reed |
| 2007 | 0:50.587 | James Stewart |
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