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| 9 World Series championship seasons: 1910, 1911, 1913, 1929, 1930, 1972, 1973, 1974, 1989 |
| Last World Series championship: 1989, 31 seasons ago |
| Philadelphia As became Kansas City As in 1955 |
| Kansas City As became Oakland As in 1968 |
| Best finish (by location): |
| Philadelphia As beat Chi Cubs in World Series in 1910 season |
| Philadelphia As beat NY Giants in World Series in 1911 season |
| Philadelphia As beat NY Giants in World Series in 1913 season |
| Philadelphia As beat Chi Cubs in World Series in 1929 season |
| Philadelphia As beat St Louis in World Series in 1930 season |
| Kansas City As finished 73-81 (.474) in American League in 1958 season |
| Oakland beat Cincinnati in World Series in 1972 season |
| Oakland beat NY Mets in World Series in 1973 season |
| Oakland beat Los Angeles in World Series in 1974 season |
| Oakland beat San Francisco in World Series in 1989 season |
| TEAM | SEASON | RECORD | PERC | DIV STAND | GB | LEAGUE | PLAYOFFS |
| Philadelphia As | 1901 | 74-62 | .544 | 4th AL | - 9.0 | ||
| Philadelphia As | 1902 | 83-53 | .610 | 1st AL | + 5.0 | ||
| Philadelphia As | 1903 | 75-60 | .556 | 2nd AL | -14.5 | ||
| Philadelphia As | 1904 | 81-70 | .536 | 5th AL | -12.5 | ||
| Philadelphia As | 1905 | 92-56 | .622 | 1st AL | + 2.0 | LNYG | |
| Philadelphia As | 1906 | 78-67 | .538 | 4th AL | -12.0 | ||
| Philadelphia As | 1907 | 88-57 | .607 | 2nd AL | - 1.5 | ||
| Philadelphia As | 1908 | 68-85 | .444 | 6th AL | -22.0 | ||
| Philadelphia As | 1909 | 95-58 | .621 | 2nd AL | - 3.5 | ||
| %Philadelphia As | 1910 | 102-48 | .680 | 1st AL | +14.5 | WChC | |
| %Philadelphia As | 1911 | 101-50 | .669 | 1st AL | +13.5 | WNYG | |
| Philadelphia As | 1912 | 90-62 | .592 | 3rd AL | -15.0 | ||
| %Philadelphia As | 1913 | 96-57 | .627 | 1st AL | + 6.5 | WNYG | |
| Philadelphia As | 1914 | 99-53 | .651 | 1st AL | + 8.5 | LBsB | |
| Philadelphia As | 1915 | 43-109 | .283 | 8th AL | -58.5 | ||
| Philadelphia As | 1916 | 36-117 | .235 | 8th AL | -54.5 | ||
| Philadelphia As | 1917 | 55-98 | .359 | 8th AL | -44.5 | ||
| Philadelphia As | 1918 | 52-76 | .402 | 8th AL | -24.0 | ||
| Philadelphia As | 1919 | 36-104 | .257 | 8th AL | -52.0 | ||
| Philadelphia As | 1920 | 48-106 | .312 | 8th AL | -50.0 | ||
| Philadelphia As | 1921 | 53-100 | .346 | 8th AL | -45.0 | ||
| Philadelphia As | 1922 | 65-89 | .422 | 7th AL | -29.0 | ||
| Philadelphia As | 1923 | 69-83 | .454 | 6th AL | -29.0 | ||
| Philadelphia As | 1924 | 71-81 | .467 | 5th AL | -20.0 | ||
| Philadelphia As | 1925 | 88-64 | .579 | 2nd AL | - 8.5 | ||
| Philadelphia As | 1926 | 83-67 | .533 | 3rd AL | - 6.0 | ||
| Philadelphia As | 1927 | 91-63 | .591 | 2nd AL | -19.0 | ||
| Philadelphia As | 1928 | 98-55 | .641 | 2nd AL | - 2.5 | ||
| %Philadelphia As | 1929 | 104-46 | .693 | 1st AL | +18.0 | WChC | |
| %Philadelphia As | 1930 | 102-52 | .662 | 1st AL | + 8.0 | WStL | |
| Philadelphia As | 1931 | 107-45 | .704 | 1st AL | +13.5 | LStL | |
| Philadelphia As | 1932 | 94-60 | .610 | 2nd AL | -13.0 | ||
| Philadelphia As | 1933 | 79-72 | .523 | 3rd AL | -19.5 | ||
| Philadelphia As | 1934 | 68-82 | .453 | 5th AL | -31.0 | ||
| Philadelphia As | 1935 | 58-91 | .389 | 8th AL | -34.0 | ||
| Philadelphia As | 1936 | 53-100 | .346 | 8th AL | -49.0 | ||
| Philadelphia As | 1937 | 54-97 | .358 | 7th AL | -46.5 | ||
| Philadelphia As | 1938 | 53-99 | .349 | 8th AL | -46.0 | ||
| Philadelphia As | 1939 | 55-97 | .362 | 7th AL | -51.5 | ||
| Philadelphia As | 1940 | 54-100 | .351 | 8th AL | -36.0 | ||
| Philadelphia As | 1941 | 64-90 | .416 | 8th AL | -37.0 | ||
| Philadelphia As | 1942 | 55-99 | .357 | 8th AL | -48.0 | ||
| Philadelphia As | 1943 | 49-105 | .318 | 8th AL | -59.0 | ||
| Philadelphia As | 1944 | 72-82 | .468 | T5th AL | -17.0 | ||
| Philadelphia As | 1945 | 52-98 | .347 | 8th AL | -34.5 | ||
| Philadelphia As | 1946 | 49-105 | .318 | 8th AL | -55.0 | ||
| Philadelphia As | 1947 | 78-76 | .506 | 5th AL | -19.0 | ||
| Philadelphia As | 1948 | 84-70 | .545 | 4th AL | -12.5 | ||
| Philadelphia As | 1949 | 81-73 | .526 | 5th AL | -16.0 | ||
| Philadelphia As | 1950 | 52-102 | .338 | 8th AL | -46.0 | ||
| Philadelphia As | 1951 | 70-84 | .455 | 6th AL | -28.0 | ||
| Philadelphia As | 1952 | 79-75 | .513 | 4th AL | -16.0 | ||
| Philadelphia As | 1953 | 59-95 | .383 | 7th AL | -41.5 | ||
| Philadelphia As | 1954 | 51-103 | .331 | 8th AL | -60.0 | ||
| Kansas City As | 1955 | 63-91 | .409 | 6th AL | -33.0 | ||
| Kansas City As | 1956 | 52-102 | .338 | 8th AL | -45.0 | ||
| Kansas City As | 1957 | 59-94 | .386 | 7th AL | -38.5 | ||
| Kansas City As | 1958 | 73-81 | .474 | 7th AL | -19.0 | ||
| Kansas City As | 1959 | 66-88 | .429 | 7th AL | -28.0 | ||
| Kansas City As | 1960 | 58-96 | .377 | 8th AL | -39.0 | ||
| Kansas City As | 1961 | 61-100 | .379 | T9th AL | -47.5 | ||
| Kansas City As | 1962 | 72-90 | .444 | 9th AL | -24.0 | ||
| Kansas City As | 1963 | 73-89 | .451 | 8th AL | -31.5 | ||
| Kansas City As | 1964 | 57-105 | .352 | 10th AL | -42.0 | ||
| Kansas City As | 1965 | 59-103 | .364 | 10th AL | -43.0 | ||
| Kansas City As | 1966 | 74-86 | .463 | 7th AL | -23.0 | ||
| Kansas City As | 1967 | 62-99 | .385 | 10th AL | -29.5 | ||
| Oakland | 1968 | 82-80 | .506 | 6th AL | -21.0 | ||
| Oakland | 1969 | 88-74 | .543 | 2nd AL West | - 9.0 | ||
| Oakland | 1970 | 89-73 | .549 | 2nd AL West | - 9.0 | ||
| Oakland | 1971 | 101-60 | .627 | 1st AL West | +16.0 | LBal | |
| %Oakland | 1972 | 93-62 | .600 | 1st AL West | + 5.5 | WDet WCin | |
| %Oakland | 1973 | 94-68 | .580 | 1st AL West | + 6.0 | WBal WNYM | |
| %Oakland | 1974 | 90-72 | .556 | 1st AL West | + 5.0 | WBal WLAD | |
| Oakland | 1975 | 98-64 | .605 | 1st AL West | + 7.0 | LBos | |
| Oakland | 1976 | 87-74 | .540 | 2nd AL West | - 2.5 | ||
| Oakland | 1977 | 63-98 | .391 | 7th AL West | -38.5 | ||
| Oakland | 1978 | 69-93 | .426 | 6th AL West | -23.0 | ||
| Oakland | 1979 | 54-108 | .333 | 7th AL West | -34.0 | ||
| Oakland | 1980 | 83-79 | .512 | 2nd AL West | -14.0 | ||
| Oakland | 1981a | 37-23 | .617 | 1st AL West | + 1.5 | WKC LNYY | |
| Oakland | 1981b | 27-22 | .551 | 2nd AL West | - 1.0 | ||
| Oakland | 1982 | 68-94 | .420 | 5th AL West | -25.0 | ||
| Oakland | 1983 | 74-88 | .457 | 4th AL West | -25.0 | ||
| Oakland | 1984 | 77-85 | .475 | 4th AL West | - 7.0 | ||
| Oakland | 1985 | 77-85 | .475 | T4th AL West | -14.0 | ||
| Oakland | 1986 | 76-86 | .469 | T3rd AL West | -16.0 | ||
| Oakland | 1987 | 81-81 | .500 | 3rd AL West | - 4.0 | ||
| Oakland | 1988 | 104-58 | .642 | 1st AL West | +13.0 | WBos LLAD | |
| %Oakland | 1989 | 99-63 | .611 | 1st AL West | + 7.0 | WTor WSF | |
| Oakland | 1990 | 103-59 | .636 | 1st AL West | + 9.0 | WBos LCin | |
| Oakland | 1991 | 84-78 | .519 | 4th AL West | -11.0 | ||
| Oakland | 1992 | 96-66 | .593 | 1st AL West | + 6.0 | LTor | |
| Oakland | 1993 | 68-94 | .420 | 7th AL West | -26.0 | ||
| Oakland | 1994 | 51-63 | .447 | 2nd AL West | - 1.0 | 12th AL | |
| Oakland | 1995 | 67-77 | .465 | 4th AL West | -11.5 | 10th AL | |
| Oakland | 1996 | 78-84 | .481 | 3rd AL West | -12.0 | T9th AL | |
| Oakland | 1997 | 65-97 | .401 | 4th AL West | -25.0 | 14th AL | |
| Oakland | 1998 | 74-88 | .457 | 4th AL West | -14.0 | 10th AL | |
| Oakland | 1999 | 87-75 | .537 | 2nd AL West | - 8.0 | 5th AL | |
| Oakland | 2000 | 91-70 | .565 | 1st AL West | + 0.5 | 2nd AL | LNYY |
| Oakland | 2001 | 102-60 | .630 | 2nd AL West | -14.0 | 2nd AL | LNYY |
| Oakland | 2002 | 103-59 | .636 | 1st AL West | + 4.0 | 2nd AL | LMin |
| Oakland | 2003 | 96-66 | .593 | 1st AL West | + 3.0 | 2nd AL | LBos |
| Oakland | 2004 | 91-71 | .562 | 2nd AL West | - 1.0 | 5th AL | |
| Oakland | 2005 | 88-74 | .543 | 2nd AL West | - 7.0 | 6th AL | |
| Oakland | 2006 | 93-69 | .574 | 1st AL West | + 4.0 | 3rd AL | WMin LDet |
| Oakland | 2007 | 76-86 | .469 | 3rd AL West | -18.0 | 9th AL | |
| Oakland | 2008 | 75-86 | .466 | 3rd AL West | -10.0 | 10th AL | |
| Oakland | 2009 | 75-87 | .463 | 4th AL West | -22.0 | T10th AL | |
| Oakland | 2010 | 81-81 | .500 | 2nd AL West | - 9.0 | T8th AL | |
| Oakland | 2011 | 74-88 | .457 | 3rd AL West | -22.0 | 10th AL | |
| Oakland | 2012 | 94-68 | .580 | 1st AL West | + 1.0 | 2nd AL | bye LDet |
| Oakland | 2013 | 96-66 | .593 | 1st AL West | + 5.0 | 2nd AL | bye LDet |
| Oakland | 2014 | 88-74 | .543 | 2nd AL West | -10.0 | 5th AL | LKC |
| Oakland | 2015 | 68-94 | .420 | 5th AL West | -20.0 | 15th AL | |
| Oakland | 2016 | 69-93 | .426 | 5th AL West | -26.0 | 13th AL | |
| Oakland | 2017 | 75-87 | .463 | 5th AL West | -26.0 | 13th AL | |
| Oakland | 2018 | 97-65 | .599 | 2nd AL West | - 6.0 | 5th AL | LNYY |
| Oakland | 2019 | 97-65 | .599 | 2nd AL West | -10.0 | 4th AL | LTB |
| Oakland | 2020 | 36-24 | .600 | 1st AL West | + 7.0 | 2nd AL | WChW LHou |