Progressive Leaders & Records for Win Probability Added (WPA)

Table
Year Career WPA   Single-Season WPA   ActiveWPA   Yearly WPA
1930 Lefty Grove+ 9.8 Lefty Grove+ 9.8 Lefty Grove+ 9.8 Lefty Grove+ 9.8
1931 Lefty Grove+ 21.6 Lefty Grove+ 11.8 Lefty Grove+ 21.6 Lefty Grove+ 11.8
1932 Lefty Grove+ 29.3 Lefty Grove+ 11.8 Lefty Grove+ 29.3 Lefty Grove+ 7.7
1933 Lefty Grove+ 34.9 Lefty Grove+ 11.8 Lefty Grove+ 34.9 Carl Hubbell+ 8.5
1934 Lefty Grove+ 33.4 Lefty Grove+ 11.8 Lefty Grove+ 33.4 Dizzy Dean+ 5.8
1935 Lefty Grove+ 38.8 Lefty Grove+ 11.8 Lefty Grove+ 38.8 Lefty Grove+ 5.4
1936 Lefty Grove+ 45.9 Lefty Grove+ 11.8 Lefty Grove+ 45.9 Lefty Grove+ 7.1
1937 Lefty Grove+ 51.2 Lefty Grove+ 11.8 Lefty Grove+ 51.2 Jim Turner 5.9
1938 Lefty Grove+ 53.7 Lefty Grove+ 11.8 Lefty Grove+ 53.7 Bill Lee 7.5
1939 Lefty Grove+ 57.3 Lefty Grove+ 11.8 Lefty Grove+ 57.3 Bucky Walters 6.3
1940 Lefty Grove+ 57.2 Lefty Grove+ 11.8 Lefty Grove+ 57.2 Bob Feller+ 8.8
1941 Lefty Grove+ 55.7 Lefty Grove+ 11.8 Lefty Grove+ 55.7 Bob Feller+ 5.6
1942 Lefty Grove+ 55.7 Lefty Grove+ 11.8 Red Ruffing+ 30.8 Ray Starr 6.1
1943 Lefty Grove+ 55.7 Lefty Grove+ 11.8 Carl Hubbell+ 28.5 Elmer Riddle 3.9
1944 Lefty Grove+ 55.7 Lefty Grove+ 11.8 Mel Harder 26.0 Bucky Walters 6.3
1945 Lefty Grove+ 55.7 Lefty Grove+ 11.8 Red Ruffing+ 32.1 Roger Wolff 5.5
1946 Lefty Grove+ 55.7 Lefty Grove+ 11.8 Red Ruffing+ 33.2 Hal Newhouser+ 7.0
1947 Lefty Grove+ 55.7 Lefty Grove+ 11.8 Red Ruffing+ 32.3 Ewell Blackwell 7.1
1948 Lefty Grove+ 55.7 Lefty Grove+ 11.8 Bob Feller+ 34.4 Harry Brecheen 5.2
1949 Lefty Grove+ 55.7 Lefty Grove+ 11.8 Bob Feller+ 34.4 Bob Lemon+ 6.9
1950 Lefty Grove+ 55.7 Lefty Grove+ 11.8 Bob Feller+ 37.5 Robin Roberts+ 5.4
1951 Lefty Grove+ 55.7 Lefty Grove+ 11.8 Bob Feller+ 39.7 Sal Maglie 5.4
1952 Lefty Grove+ 55.7 Lefty Grove+ 11.8 Bob Feller+ 36.1 Bobby Shantz 6.6
1953 Lefty Grove+ 55.7 Lefty Grove+ 11.8 Bob Feller+ 37.5 Warren Spahn+ 7.0
1954 Lefty Grove+ 55.7 Lefty Grove+ 11.8 Bob Feller+ 39.1 Robin Roberts+ 6.6
1955 Lefty Grove+ 55.7 Lefty Grove+ 11.8 Bob Feller+ 38.7 Ray Narleski 6.1
1956 Lefty Grove+ 55.7 Lefty Grove+ 11.8 Warren Spahn+ 38.0 Herb Score 5.3
1957 Lefty Grove+ 55.7 Lefty Grove+ 11.8 Warren Spahn+ 40.6 Ray Narleski 4.6
1958 Lefty Grove+ 55.7 Lefty Grove+ 11.8 Warren Spahn+ 43.5 Red Witt 4.1
1959 Lefty Grove+ 55.7 Lefty Grove+ 11.8 Warren Spahn+ 46.1 Hoyt Wilhelm+ 4.3
1960 Lefty Grove+ 55.7 Lefty Grove+ 11.8 Warren Spahn+ 49.6 Lindy McDaniel 5.7
1961 Lefty Grove+ 55.7 Lefty Grove+ 11.8 Warren Spahn+ 52.2 Stu Miller 4.1
1962 Lefty Grove+ 55.7 Lefty Grove+ 11.8 Warren Spahn+ 54.9 Bob Purkey 5.7
1963 Warren Spahn+ 61.5 Lefty Grove+ 11.8 Warren Spahn+ 61.5 Sandy Koufax+ 7.8
1964 Warren Spahn+ 58.0 Lefty Grove+ 11.8 Warren Spahn+ 58.0 Dean Chance 8.4
1965 Warren Spahn+ 57.1 Lefty Grove+ 11.8 Warren Spahn+ 57.1 Sandy Koufax+ 8.3
1966 Warren Spahn+ 57.1 Lefty Grove+ 11.8 Whitey Ford+ 36.6 Sandy Koufax+ 8.0
1967 Warren Spahn+ 57.1 Lefty Grove+ 11.8 Whitey Ford+ 37.0 Ted Abernathy 4.8
1968 Warren Spahn+ 57.1 Lefty Grove+ 11.8 Juan Marichal+ 29.6 Bob Gibson+ 8.0
1969 Warren Spahn+ 57.1 Lefty Grove+ 11.8 Juan Marichal+ 35.9 Bob Gibson+ 7.7
1970 Warren Spahn+ 57.1 Lefty Grove+ 11.8 Juan Marichal+ 35.8 Lindy McDaniel 5.7
1971 Warren Spahn+ 57.1 Lefty Grove+ 11.8 Juan Marichal+ 37.5 Vida Blue 6.6
1972 Warren Spahn+ 57.1 Lefty Grove+ 11.8 Bob Gibson+ 41.0 Steve Carlton+ 8.3
1973 Warren Spahn+ 57.1 Lefty Grove+ 11.8 Bob Gibson+ 42.8 John Hiller 8.4
1974 Warren Spahn+ 57.1 Lefty Grove+ 11.8 Bob Gibson+ 41.7 Luis Tiant 5.8
1975 Warren Spahn+ 57.1 Lefty Grove+ 11.8 Tom Seaver+ 40.0 Rich Gossage+ 7.0
1976 Warren Spahn+ 57.1 Lefty Grove+ 11.8 Tom Seaver+ 42.9 Vida Blue 5.7
1977 Warren Spahn+ 57.1 Lefty Grove+ 11.8 Tom Seaver+ 47.7 Rich Gossage+ 5.9
1978 Warren Spahn+ 57.1 Lefty Grove+ 11.8 Tom Seaver+ 49.3 Mike Caldwell 6.1
1979 Warren Spahn+ 57.1 Lefty Grove+ 11.8 Tom Seaver+ 51.0 Aurelio Lopez 6.5
1980 Warren Spahn+ 57.1 Lefty Grove+ 11.8 Tom Seaver+ 50.6 Doug Corbett 7.8
1981 Warren Spahn+ 57.1 Lefty Grove+ 11.8 Tom Seaver+ 52.8 Fernando Valenzuela 4.3
1982 Warren Spahn+ 57.1 Lefty Grove+ 11.8 Tom Seaver+ 50.7 Bill Caudill 5.7
1983 Warren Spahn+ 57.1 Lefty Grove+ 11.8 Tom Seaver+ 50.4 Dan Quisenberry 4.4
1984 Warren Spahn+ 57.1 Lefty Grove+ 11.8 Tom Seaver+ 52.5 Willie Hernandez 8.6
1985 Warren Spahn+ 57.1 Lefty Grove+ 11.8 Tom Seaver+ 55.8 Dwight Gooden 9.9
1986 Warren Spahn+ 57.1 Lefty Grove+ 11.8 Tom Seaver+ 56.4 Roger Clemens 5.8
1987 Warren Spahn+ 57.1 Lefty Grove+ 11.8 Rich Gossage+ 35.7 Roger Clemens 5.2
1988 Warren Spahn+ 57.1 Lefty Grove+ 11.8 Don Sutton+ 33.4 Orel Hershiser 6.7
1989 Warren Spahn+ 57.1 Lefty Grove+ 11.8 Bert Blyleven+ 33.1 Mark Davis 5.8
1990 Warren Spahn+ 57.1 Lefty Grove+ 11.8 Nolan Ryan+ 32.5 Roger Clemens 7.1
1991 Warren Spahn+ 57.1 Lefty Grove+ 11.8 Nolan Ryan+ 34.9 Jeff Montgomery 4.1
1992 Warren Spahn+ 57.1 Lefty Grove+ 11.8 Nolan Ryan+ 34.8 Greg Maddux+ 5.2
1993 Warren Spahn+ 57.1 Lefty Grove+ 11.8 Roger Clemens 34.7 Kevin Appier 6.2
1994 Warren Spahn+ 57.1 Lefty Grove+ 11.8 Roger Clemens 38.3 Greg Maddux+ 6.5
1995 Warren Spahn+ 57.1 Lefty Grove+ 11.8 Roger Clemens 39.3 Greg Maddux+ 8.1
1996 Warren Spahn+ 57.1 Lefty Grove+ 11.8 Roger Clemens 43.1 Troy Percival 6.6
1997 Warren Spahn+ 57.1 Lefty Grove+ 11.8 Roger Clemens 50.2 Roger Clemens 7.1
1998 Warren Spahn+ 57.1 Lefty Grove+ 11.8 Roger Clemens 54.6 Trevor Hoffman 6.3
1999 Warren Spahn+ 57.1 Lefty Grove+ 11.8 Roger Clemens 55.6 Pedro Martinez+ 6.9
2000 Roger Clemens 57.9 Lefty Grove+ 11.8 Roger Clemens 57.9 Pedro Martinez+ 8.1
2001 Roger Clemens 60.3 Lefty Grove+ 11.8 Roger Clemens 60.3 Randy Johnson+ 6.2
2002 Roger Clemens 61.1 Lefty Grove+ 11.8 Roger Clemens 61.1 Randy Johnson+ 6.0
2003 Roger Clemens 64.1 Lefty Grove+ 11.8 Roger Clemens 64.1 Eric Gagne 6.6
2004 Roger Clemens 68.2 Lefty Grove+ 11.8 Roger Clemens 68.2 Joe Nathan 5.8
2005 Roger Clemens 74.3 Lefty Grove+ 11.8 Roger Clemens 74.3 Roger Clemens 6.0
2006 Roger Clemens 77.0 Lefty Grove+ 11.8 Roger Clemens 77.0 Francisco Rodriguez 5.4
2007 Roger Clemens 77.7 Lefty Grove+ 11.8 Roger Clemens 77.7 J.J. Putz 6.0
2008 Roger Clemens 77.7 Lefty Grove+ 11.8 Greg Maddux+ 59.4 Cliff Lee 5.9
2009 Roger Clemens 77.7 Lefty Grove+ 11.8 Pedro Martinez+ 53.7 Zack Greinke 5.8
2010 Roger Clemens 77.7 Lefty Grove+ 11.8 Mariano Rivera 50.7 Roy Halladay 5.1
2011 Roger Clemens 77.7 Lefty Grove+ 11.8 Mariano Rivera 54.0 Tyler Clippard 5.2
2012 Roger Clemens 77.7 Lefty Grove+ 11.8 Mariano Rivera 54.0 Jim Johnson 5.3
2013 Roger Clemens 77.7 Lefty Grove+ 11.8 Mariano Rivera 56.6 Clayton Kershaw 4.9
2014 Roger Clemens 77.7 Lefty Grove+ 11.8 Joe Nathan 30.9 Clayton Kershaw 5.3
2015 Roger Clemens 77.7 Lefty Grove+ 11.8 Joe Nathan 30.9 Zack Greinke 6.9
2016 Roger Clemens 77.7 Lefty Grove+ 11.8 Clayton Kershaw 34.6 Zach Britton 6.5
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