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Most National Wins in a Single Season
Seasons with Most First-Time Grand National Winners
Season With Most Rookie Wins
Seasons With Greatest Parity
Seasons With Lowest Parity
Season Sweep of all Nationals Of One Type
Most National Wins In A Single Season | ||
| # Wins | Name | Year |
| 1. 12 wins | Ricky Graham | 1993 |
| 2. 10 wins | Scott Parker | 1989 |
| 1995 | ||
| 4. 9 wins | Bubba Shobert | 1986 |
| Chris Carr | 2001 | |
| 6. 8 wins | Joe Leonard | 1954 |
| Scott Parker | 1992 | |
| 1994 | ||
| 1997 | ||
| 10. 7 wins | Jay Springsteen | 1976 |
| Scott Parker | 1990 | |
| 1998 | ||
| Will Davis | 1997 | |
| Kenny Coolbeth | 2008 | |
| Active riders' names are highlighted in red | ||
Season With Most First-Time Grand National Winners | ||||||||||
| Rank | # Winner | Year | Names | |||||||
| 1. | 7 new winners | 1971 | Jim Odom (2 wins) | Kel Carruthers | Sonny Burres | Robert E. Lee | Yvon Duhamel | Tommy Rockwood | John Cooper | |
| 1972 | John Hateley | Kenny Roberts | Don Emde | Gary Fisher | Gary Scott (2 wins) | Mike Gerald | Paul Smart | |||
| 1973 | Mike Haney | Jarno Saarinen | Don Castro | Geoff Perry | Chuck Joyner | Rex Beauchamp | Scott Brelsford | |||
| 1980 | Ronnie Jones (2 wins) | Patrick Pons | Billy Labrie (3 wins) | Wes Cooley | Rich Schlachter (2 wins) | Scott Pearson | Ricky Graham (2 wins) | |||
| 5. | 6 new winners | 1963 | Ralph White | Ronnie Rall (2 wins) | Jody Nichlas (2 wins) | Gary Nixon (2 wins) | George Roeder (3 wins) | Sid Payne | ||
| 1969 | Larry Palmgren | Eddie Wirth | Jim Rice | Mark Brelsford | Chuck Palmgren | Art Baumann | ||||
| 1974 | Dave Hansen | Giacomo Agostini | Corky Kenner (2 wins) | Mike Kidd | Hank Scott | Rick Hocking (2 wins) | 1976 | Bubba Rush | Johnny Cecetto | Steve Eklund (3 wins) | Ted Boody | Steve Baker (2 wins) | Terry Poovey |
| 2002 | Ricky Winsett | Johnny Murphree | Chris Evans | Chris Hart | Jake Johnson | Kenny Coolbeth | ||||
| 10. | 4 new winners | 1966 | Buddy Elmore | Babe DeMay | Cal Rayborn | Fred Nix | ||||
| 1978 | Alex Jorgensen (2 wins) | Mike Baldwin (2 wins) | Dale Singleton | Steve Morehead | ||||||
| 1979 | Mickey Fay | Randy Goss (3 wins) | Brad Hurst | Scott Parker (2 wins) | ||||||
| 1981 | Freddie Spencer (2 wins) | Jimmy Filice | Nicky Richichi | Randy Mamola | ||||||
| 1995 | Brett Landes | Steve Beattie | Kevin Varnes (2 wins) | Rich King | ||||||
| Active riders' names are highlighted in red | ||||||||||
Season With Most Rookie Wins | ||||
| Rank/#Wins | Year | Rider # | Name | # Wins |
| 1. 6 wins | 1955 | 11R | Brad Andres | 5 wins | 8W | Don Tindall | 1 win |
| 3. 5 wins | 1976 | 74Z | Steve Eklund | 3 wins |
| 84X | Ted Boody | 1 win | ||
| 96N | Terry Poovey | 1 win | ||
| 6. 4 wins | 1969 | 80Y | Jim Rice | 3 wins |
| 87 | Mark Brelsford | 1 win | ||
| 1972 | 64R | Gary Scott | 2 wins | |
| 80Y | Kenny Roberts | 1 win | ||
| 29L | Mike Gerald | 1 win | ||
| 5. 3 wins | 1970 | 38X | Dave Aldana | 3 wins |
| 1974 | 31Z | Rick Hocking | 2 wins | |
| 20R | Hank Scott | 1 win | ||
| 1975 | 65X | Jay Springsteen | 2 wins | |
| 80C | Greg Sassaman | 1 win | ||
| 8. 2 wins | 1979 | 40X | Scott Parker | 2 wins |
| 9. 1 win | 1954 | 61 | Harry Fearey | 1 win |
| 1958 | 76Z | Dick Dorresteyn | 1 win | |
| 1960 | 18 | Troy Lee | 1 win | |
| 1971 | 54N | Robert E. Lee | 1 win | |
| 1973 | 84Y | Scott Brelsford | 1 win | |
| 1977 | 32X | Garth Brow | 1 win | |
| 1981 | 17Z | Jim Filice | 1 win | |
| 1983 | 8Y | Doug Chandler | 1 win | |
| 2002 | 14U | Jake Johnson | 1 win | |
| Active riders' names are highlighted in red | ||||
Seasons With Highest | ||||
| Rank | Year | # Races | # Different Winners | WPR Ratio* |
| 1. | 1973 | 24 races | 18 different winners | 0.750 ratio |
| 2. | 2006 | 17 races | 12 different winners | 0.706 ratio |
| 3. | 1958 | 10 races | 7 different winners | 0.700 ratio |
| 4. | 1960 | 12 races | 8 different winners | 0.667 ratio |
| 1972 | 24 races | 16 different winners | ||
| 6. | 1981 | 26 races | 16 different winners | 0.654 ratio |
| 7. | 2002 | 20 races | 13 different winners | 0.650 ratio |
| 8. | 2000 | 14 races | 9 different winners | 0.643 ratio |
| 1963 | 14 races | 9 different winners | ||
| 10. | 1971 | 21 races | 13 different winners | 0.619 ratio |
| The WPR ratio measures the parity of a given racing season.
If a different rider won each race, and each winner only won a single race, the season would have a 1.000 WPR ration. | ||||
Seasons With Lowest | ||||
| Rank | Year | # Races | # Different Winners | WPR Ratio* |
| 1. | 1997 | 22 races | 6 different winners | 0.273 ratio |
| 2. | 1993 | 21 races | 6 different winners | 0.286 ratio |
| 3. | 1988 | 17 races | 5 different winners | 0.294 ratio |
| 4. | 2008 | 19 races | 6 different winners | 0.316 ratio |
| 5. | 1990 | 15 races | 5 different winners | 0.333 ratio |
| 1998 | 18 races | 6 different winners | ||
| 7. | 2011 | 20 races | 7 different winners | 0.350 ratio |
| 8. | 1968 | 22 races | 8 different winners | 0.364 ratio |
| 1984 | 33 races | 12 different winners | ||
| 11. | 1996 | 19 races | 7 different winners | 0.368 ratio |
| 12. | 1989 | 16 races | 6 different winners | 0.375 ratio |
| 1991 | 16 races | 6 different winners | ||
| The WPR ratio measures the parity of a given racing season.
If one rider won every event, the season would have a near-zero WPR ratio. | ||||
Season Sweep of Every National Of One Type (minimum 2 events) | ||||
| 8 wins | All M Nationals | 1989 | Scott Parker | |
| 4 wins | All M Nationals | 1968 | Fred Nix | |
| 3 wins | All TT Nationals | 1966 | Eddie Mulder | |
| 2 wins | All TT Nationals | 1954 | Joe Leonard | |
| 2 wins | All RR Nationals | 1957 | ||
| 2 wins | All HM Nationals | 1957 | Carroll Resweber | |
| 2 wins | All RR Nationals | 1959 | Brad Andres | |
| 2 wins | All M Nationals | 1962 | Bart Markel | |
| 2 wins | All M Nationals | 1963 | George Roeder | |
| 2 wins | All ST Nationals | 1978 | Steve Eklund | |
| 2 wins | All ST Nationals | 1996 | Will Davis | |
| 2 wins | All TT Nationals | 2002 | Nicky Hayden | |
| 2 wins | All TT Nationals | 2008 | Henry Wiles | |
| 2 wins | All TT Nationals | 2009 | ||
| 2 wins | All TT Nationals | 2010 | ||
| Active riders' names are highlighted in red | ||||