← MLB leaders MLB Era-Adjusted Careers Whole careers on one scale: every value-positive season is scored against its own season's peers, and those standings are summed. 6,813 careers ranked.
Rankings as of 2026-07-28 , as declared by the corpus that produced them.
each value-positive season is z-scored against its OWN (season, position-group) peer distribution, then those z-scores are summed across the career — careerZ is the total standard deviations a player accumulated above the peers he actually played against
Career z — All Positions summed season z Total standard deviations above era peers across a career.
Showing 30 of 150 ranked entries.
1 Babe Ruth Batter · 1915–1934 · 20 rated · peak 1924 58.37 2 Ty Cobb Batter · 1905–1928 · 24 rated · peak 1909 52.59 3 Hank Aaron Batter · 1954–1976 · 23 rated · peak 1963 50.61 4 Barry Bonds Batter · 1986–2007 · 21 rated · peak 2001 50.55 5 Ted Williams Batter · 1939–1960 · 18 rated · peak 1946 48.44 6 Lou Gehrig Batter · 1925–1938 · 14 rated · peak 1927 48.43 7 Stan Musial Batter · 1942–1963 · 21 rated · peak 1948 48.38 8 Mel Ott Batter · 1926–1946 · 21 rated · peak 1942 46.35 9 Willie Mays Batter · 1951–1973 · 22 rated · peak 1955 44.76 10 Rogers Hornsby Batter · 1916–1931 · 16 rated · peak 1924 43.77 11 Jimmie Foxx Batter · 1927–1945 · 17 rated · peak 1938 43.74 12 Tristram Speaker Batter · 1908–1928 · 21 rated · peak 1923 41.9 13 Albert Pujols Batter · 2001–2022 · 22 rated · peak 2009 40.71 14 Honus Wagner Batter · 1897–1917 · 21 rated · peak 1908 39.38 15 Frank Robinson Batter · 1956–1976 · 20 rated · peak 1966 38.64 16 Alex Rodriguez Batter · 1995–2016 · 21 rated · peak 2007 38.46 17 Mickey Mantle Batter · 1951–1968 · 18 rated · peak 1958 37.31 18 Walter Johnson Pitcher · 1907–1927 · 21 rated · peak 1918 36.39 19 Harry Heilmann Batter · 1914–1930 · 16 rated · peak 1923 35.59 20 Carl Yastrzemski Batter · 1961–1983 · 23 rated · peak 1967 35.5 21 Joe DiMaggio Batter · 1936–1951 · 13 rated · peak 1948 34.96 22 Al Simmons Batter · 1924–1943 · 17 rated · peak 1930 34.03 23 Reggie Jackson Batter · 1967–1987 · 21 rated · peak 1969 33.91 24 Mike Schmidt Batter · 1973–1989 · 17 rated · peak 1981 33.6 25 Eddie Collins Sr. Batter · 1908–1928 · 21 rated · peak 1924 33.48 26 Eddie Murray Batter · 1977–1996 · 20 rated · peak 1981 32.62 27 Freddie Freeman Batter · 2011–2026 · 16 rated · peak 2020 32.51 28 Rafael Palmeiro Batter · 1987–2005 · 19 rated · peak 1993 32.48 29 Miguel Cabrera Batter · 2003–2023 · 21 rated · peak 2013 32.09 30 Goose Goslin Batter · 1922–1938 · 17 rated · peak 1924 31.92 Show 30 More Show Full List
Batter Careers summed season z The era-adjusted batter career board.
Showing 25 of 25 ranked entries.
1 Babe Ruth Batter · 1915–1934 · 20 rated · peak 1924 58.37 2 Ty Cobb Batter · 1905–1928 · 24 rated · peak 1909 52.59 3 Hank Aaron Batter · 1954–1976 · 23 rated · peak 1963 50.61 4 Barry Bonds Batter · 1986–2007 · 21 rated · peak 2001 50.55 5 Ted Williams Batter · 1939–1960 · 18 rated · peak 1946 48.44 6 Lou Gehrig Batter · 1925–1938 · 14 rated · peak 1927 48.43 7 Stan Musial Batter · 1942–1963 · 21 rated · peak 1948 48.38 8 Mel Ott Batter · 1926–1946 · 21 rated · peak 1942 46.35 9 Willie Mays Batter · 1951–1973 · 22 rated · peak 1955 44.76 10 Rogers Hornsby Batter · 1916–1931 · 16 rated · peak 1924 43.77 11 Jimmie Foxx Batter · 1927–1945 · 17 rated · peak 1938 43.74 12 Tristram Speaker Batter · 1908–1928 · 21 rated · peak 1923 41.9 13 Albert Pujols Batter · 2001–2022 · 22 rated · peak 2009 40.71 14 Honus Wagner Batter · 1897–1917 · 21 rated · peak 1908 39.38 15 Frank Robinson Batter · 1956–1976 · 20 rated · peak 1966 38.64 16 Alex Rodriguez Batter · 1995–2016 · 21 rated · peak 2007 38.46 17 Mickey Mantle Batter · 1951–1968 · 18 rated · peak 1958 37.31 18 Harry Heilmann Batter · 1914–1930 · 16 rated · peak 1923 35.59 19 Carl Yastrzemski Batter · 1961–1983 · 23 rated · peak 1967 35.5 20 Joe DiMaggio Batter · 1936–1951 · 13 rated · peak 1948 34.96 21 Al Simmons Batter · 1924–1943 · 17 rated · peak 1930 34.03 22 Reggie Jackson Batter · 1967–1987 · 21 rated · peak 1969 33.91 23 Mike Schmidt Batter · 1973–1989 · 17 rated · peak 1981 33.6 24 Eddie Collins Sr. Batter · 1908–1928 · 21 rated · peak 1924 33.48 25 Eddie Murray Batter · 1977–1996 · 20 rated · peak 1981 32.62
Pitcher Careers summed season z The era-adjusted pitcher career board.
Showing 25 of 25 ranked entries.
1 Walter Johnson Pitcher · 1907–1927 · 21 rated · peak 1918 36.39 2 Cy Young Pitcher · 1890–1911 · 22 rated · peak 1901 31.01 3 Mariano Rivera Pitcher · 1995–2013 · 19 rated · peak 2008 29.46 4 Warren Spahn Pitcher · 1946–1965 · 20 rated · peak 1947 25.99 5 Kenley Jansen Pitcher · 2010–2026 · 17 rated · peak 2017 25.57 6 Christy Mathewson Pitcher · 1901–1915 · 15 rated · peak 1905 25.26 7 Trevor Hoffman Pitcher · 1993–2010 · 18 rated · peak 1998 24.76 8 Lefty Grove Pitcher · 1925–1941 · 17 rated · peak 1931 24.6 9 Dennis Eckersley Pitcher · 1975–1998 · 24 rated · peak 1990 23.79 10 Roger Clemens Pitcher · 1984–2007 · 24 rated · peak 1997 23.13 11 Greg Maddux Pitcher · 1987–2007 · 21 rated · peak 1995 22.62 12 Billy Wagner Pitcher · 1996–2010 · 15 rated · peak 1999 22.5 13 Grover Alexander Pitcher · 1911–1930 · 19 rated · peak 1915 22.32 14 Kid Nichols Pitcher · 1890–1905 · 14 rated · peak 1898 20.74 15 Carl Hubbell Pitcher · 1928–1943 · 16 rated · peak 1933 20.64 16 Nolan Ryan Jr. Pitcher · 1968–1993 · 26 rated · peak 1972 20.49 17 Rollie Fingers Pitcher · 1969–1985 · 16 rated · peak 1981 20.36 18 Aroldis Chapman Pitcher · 2010–2026 · 17 rated · peak 2025 20.24 19 John Smoltz Pitcher · 1988–2007 · 19 rated · peak 2003 19.58 20 Tom Seaver Pitcher · 1967–1986 · 20 rated · peak 1975 19.5 21 Eddie Plank Pitcher · 1901–1917 · 17 rated · peak 1911 19.04 22 Rich Gossage Pitcher · 1972–1994 · 22 rated · peak 1981 18.92 23 Don Sutton Pitcher · 1966–1988 · 21 rated · peak 1975 18.61 24 John Franco Pitcher · 1984–2005 · 21 rated · peak 1988 18.45 25 Randy Johnson Pitcher · 1989–2009 · 21 rated · peak 2002 17.99