Major League All-Time Pitching Records
Updated February 21, 2017 | Factmonster Staff 
(through 2006)
- Most Games Won—511, Cy Young, Cleveland N.L., 1890–98, St. Louis N.L., 1899–1900, Boston A.L., 1901–08, Cleveland A.L., 1909–11, Boston N.L., 1911.
- Most Games Won, Season—54, Al Spalding, Boston N.A., 1875. (Since 1900—41, Jack Chesbro, New York A.L., 1904).
- Most Consecutive Games Won—24, Carl Hubbell, New York N.L., 1936 (16) and 1937 (8).
- Most Consecutive Games Won, Season—19, Tim Keefe, New York N.L., 1888; Rube Marquard, New York N.L., 1912.
- Most Years Won 20 or More Games—16, Cy Young, Cleveland N.L., 1891–98, St. Louis N.L., 1899–1900, Boston A.L., 1901–04, 1907–08.
- Most Shutouts—110, Walter Johnson, Washington A.L., 1907–27.
- Most Shutouts, Season—16, Grover Alexander, Philadelphia N.L., 1916.
- Most Consecutive Shutouts—6, Sam Leever, Pittsburgh, N.L., 1903; Don Drysdale, Los Angeles N.L., 1968.
- Most Consecutive Scoreless Innings—59, Orel Hershiser, Los Angeles Dodgers, 1988.
- Most Strikeouts—5,714, Nolan Ryan, New York N.L., California A.L., Houston N.L., 1968–1988 Texas, 1989–93.
- Most Strikeouts, Season—513, Matthew Kilroy, Baltimore A.A., 1886. (Since 1900—383, Nolan Ryan, California A.L., 1973).
- Most Strikeouts, Game—21, Tom Cheney, Washington A.L., 1962, 16 innings. 20, Roger Clemens, Boston A.L., 1986, nine innings; Kerry Wood, Chicago N.L., 1998, nine innings.
- Most Consecutive Strikeouts—10, Tom Seaver, New York N.L. vs. San Diego, April 22, 1970.
- Most Games, Season—106, Mike Marshall, Los Angeles N.L., 1974.
- Most Complete Games, Season—75, William White, Cincinnati N.L., 1879. (Since 1900—48, Jack Chesbro, New York A.L., 1904).
