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Sports > Baseball > Through The Years > Annual Pitching Leaders (since 1900) > Winning Percentage

American League

Multiple winners: Lefty Grove (5); Chief Bender, Roger Clemens and Whitey Ford (3); Johnny Allen, Eddie Cicotte, Mike Cuellar, Lefty Gomez, Ron Guidry, Catfish Hunter, Randy Johnson, Walter Johnson, Pedro Martinez, Jim Palmer, Pete Vuckovich and Smokey Joe Wood (2).

Year		W-L	Pct
1901	Clark Griffith, Chicago	24-7	.774
1902	Bill Bernhard, Phila-Cleve	18-5	.783
1903	Cy Young, Boston	28-9	.757
1904	Jack Chesbro, New York	41-12	.774
1905	Andy Coakley, Philadelphia	20-7	.741
1906	Eddie Plank, Philadelphia	19-6	.760
1907	Wild Bill Donovan, Detroit	25-4	.862
1908	Ed Walsh, Chicago	40-15	.727
1909	George Mullin, Detroit	29-8	.784

1910	Chief Bender, Philadelphia	23-5	.821
1911	Chief Bender, Philadelphia	17-5	.773
1912	Smokey Joe Wood, Boston	34-5	.872
1913	Walter Johnson, Washington	36-7	.837
1914	Chief Bender, Philadelphia	17-3	.850
1915	Smokey Joe Wood, Boston	15-5	.750
1916	Eddie Cicotte, Chicago	15-7	.682
1917	Reb Russell, Chicago	15-5	.750
1918	Sad Sam Jones, Boston	16-5	.762
1919	Eddie Cicotte, Chicago	29-7	.806

1920	Jim Bagby, Cleveland	31-12	.721
1921	Carl Mays, New York	27-9	.750
1922	Joe Bush, New York	26-7	.788
1923	Herb Pennock, New York	19-6	.760
1924	Walter Johnson, Washington	23-7	.767
1925	Stan Coveleski, Washington	20-5	.800
1926	George Uhle, Cleveland	27-11	.711
1927	Waite Hoyt, New York	22-7	.759
1928	General Crowder, St. Louis	21-5	.808
1929	Lefty Grove, Philadelphia	20-6	.769

1930	Lefty Grove, Philadelphia	28-5	.848
1931	Lefty Grove, Philadelphia	31-4	.886
1932	Johnny Allen, New York	17-4	.810
1933	Lefty Grove, Philadelphia	24-8	.750
1934	Lefty Gomez, New York	26-5	.839
1935	Eldon Auker, Detroit	18-7	.720
1936	Monte Pearson, New York	19-7	.731
1937	Johnny Allen, Cleveland	15-1	.938
1938	Red Ruffing, New York	21-7	.750
1939	Lefty Grove, Boston	15-4	.789

1940	Schoolboy Rowe, Detroit	16-3	.842
1941	Lefty Gomez, New York	15-5	.750
1942	Ernie Bonham, New York	21-5	.808
1943	Spud Chandler, New York	20-4	.833
1944	Tex Hughson, Boston	18-5	.783
1945	Hal Newhouser, Detroit	25-9	.735
1946	Boo Ferriss, Boston	25-6	.806
1947	Allie Reynolds, New York	19-8	.704
1948	Jack Kramer, Boston	18-5	.783
1949	Ellis Kinder, Boston	23-6	.793

1950	Vic Raschi, New York	21-8	.724
1951	Bob Feller, Cleveland	22-8	.733
1952	Bobby Shantz, Philadelphia	24-7	.774
1953	Ed Lopat, New York	16-4	.800
1954	Sandy Consuegra, Chicago	16-3	.842
1955	Tommy Byrne, New York	16-5	.762
1956	Whitey Ford, New York	19-6	.760
1957	Dick Donovan, Chicago	16-6	.727
	& Tom Sturdivant, New York	16-6	.727
1958	Bob Turley, New York	21-7	.750
1959	Bob Shaw, Chicago	18-6	.750

1960	Jim Perry, Cleveland	18-10	.643
1961	Whitey Ford, New York	25-4	.862
1962	Ray Herbert, Chicago	20-9	.690
1963	Whitey Ford, New York	24-7	.774
1964	Wally Bunker, Baltimore	19-5	.792
1965	Mudcat Grant, Minnesota	21-7	.750
1966	Sonny Siebert, Cleveland	16-8	.667
1967	Joe Horlen, Chicago	19-7	.731
1968	Denny McLain, Detroit	31-6	.838
1969	Jim Palmer, Baltimore	16-4	.800

1970	Mike Cuellar, Baltimore	24-8	.750
1971	Dave McNally, Baltimore	21-5	.808
1972	Catfish Hunter, Oakland	21-7	.750
1973	Catfish Hunter, Oakland	21-5	.808
1974	Mike Cuellar, Baltimore	22-10	.688
1975	Mike Torrez, Baltimore	20-9	.690
1976	Bill Campbell, Minnesota	17-5	.773
1977	Paul Splittorff, Kansas City	16-6	.727
1978	Ron Guidry, New York	25-3	.893
1979	Mike Caldwell, Milwaukee	16-6	.727

1980	Steve Stone, Baltimore	25-7	.781
1981	Pete Vuckovich, Milwaukee	14-4	.778
1982	Pete Vuckovich, Milwaukee	18-6	.750
	& Jim Palmer, Baltimore	15-5	.750
1983	Rich Dotson, Chicago	22-7	.759
1984	Doyle Alexander, Toronto	17-6	.739
1985	Ron Guidry, New York	22-6	.786
1986	Roger Clemens, Boston	24-4	.857
1987	Roger Clemens, Boston	20-9	.690
1988	Frank Viola, Minnesota	24-7	.774
1989	Bret Saberhagen, Kansas City	23-6	.793

1990	Bob Welch, Oakland	27-6	.818
1991	Scott Erickson, Minnesota	20-8	.714
1992	Mike Mussina, Baltimore	18-5	.783
1993	Jimmy Key, New York	18-6	.750
1994	Jason Bere, Chicago	12-2	.857
1995	Randy Johnson, Seattle	18-2	.900
1996	Charles Nagy, Cleveland	17-5	.773
1997	Randy Johnson, Seattle	20-4	.833
1998	David Wells, New York	18-4	.818
1999	Pedro Martinez, Boston	23-4	.852

2000	Tim Hudson, Oakland	20-6	.769
2001	Roger Clemens, New York	20-3	.870
2002	Pedro Martinez, Boston	20-4	.833
2003	Roy Halladay, Toronto	22-7	.759
2004	Curt Schilling, Boston	21-6	.778