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Seattle Mariners Team Index | |||||||||||||||||||
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| Playoffs | |||||||||||
| Year | W | L | WPct | Finish | Games Back | Division | LCS | WS | Avg | ERA | Manager |
| 1930 | 65 | 95 | .406 | 4 | 24 | - | - | - | .281 | 5.12 | Eric Cooper |
| 1931 | 62 | 98 | .388 | 4 | 34 | - | - | - | .266 | 4.59 | Robert Jordan |
| 1932 | 63 | 93 | .404 | 4 | 21 | - | - | - | .260 | 5.00 | Peter Fletcher |
| 1933 | 80 | 76 | .513 | 4 | 13 | - | - | - | .280 | 4.75 | Peter Fletcher |
| 1934 | 91 | 65 | .583 | 1 | 0 | 3-4 | - | - | .282 | 4.17 | Peter Fletcher |
| 1935 | 92 | 70 | .568 | 2 | 2 | - | 4-3 | 1-4 | .286 | 4.69 | Peter Fletcher |
| 1936 | 92 | 71 | .564 | 2 | 5.5 | - | 0-4 | - | .276 | 4.76 | Peter Fletcher |
| 1937 | 88 | 74 | .543 | 3 | 2 | - | - | - | .287 | 4.59 | Peter Fletcher |
| 1938 | 99 | 63 | .611 | 1 | 0 | - | 4-1 | 4-0 | .282 | 3.91 | Peter Fletcher |
| 1939 | 94 | 68 | .580 | 2 | 1 | - | 4-2 | 4-1 | .280 | 4.15 | Peter Fletcher |
| 1940 | 92 | 70 | .568 | 1 | 0 | - | 4-0 | 0-4 | .281 | 3.95 | Peter Fletcher |
| 1941 | 94 | 68 | .580 | 1 | 0 | - | 1-4 | - | .284 | 3.91 | Peter Fletcher |
| 1942 | 90 | 72 | .556 | 4 | 5 | - | - | - | .273 | 4.14 | Peter Fletcher |
| 1943 | 77 | 85 | .475 | 5 | 22 | - | - | - | .281 | 4.33 | Peter Fletcher |
| 1944 | 94 | 68 | .580 | 1 | 0 | - | 3-4 | - | .282 | 4.98 | Peter Fletcher |
| 1945 | 85 | 77 | .525 | 5 | 18 | - | - | - | .269 | 4.44 | Peter Fletcher |
| 1946 | 67 | 95 | .414 | 7 | 40 | - | - | - | .263 | 4.77 | Peter Fletcher |
| 1947 | 49 | 113 | .302 | 8 | 57 | - | - | - | .256 | 5.43 | Peter Fletcher |
| 1948 | 42 | 120 | .259 | 8 | 61 | - | - | - | .244 | 5.73 | Peter Fletcher |
| 1949 | 67 | 95 | .414 | 7 | 33 | - | - | - | .252 | 5.26 | Peter Fletcher |
| 1950 | 103 | 59 | .636 | 2 | 1 | - | 4-3 | 2-4 | .281 | 4.26 | Peter Fletcher |
| 1951 | 101 | 61 | .623 | 1 | 0 | - | 1-4 | - | .284 | 4.27 | Peter Fletcher |
| 1952 | 100 | 62 | .617 | 1 | 0 | - | 3-4 | - | .283 | 4.35 | Peter Fletcher |
| 1953 | 94 | 68 | .580 | 2 | 7 | - | 0-4 | - | .269 | 4.33 | Peter Fletcher |
| 1954 | 86 | 76 | .531 | 5 | 15 | - | - | - | .264 | 4.55 | Peter Fletcher |
| 1955 | 78 | 84 | .481 | 5 | 22 | - | - | - | .257 | 4.17 | Peter Fletcher |
| 1956 | 87 | 75 | .537 | 4 | 16 | - | - | - | .261 | 4.58 | Peter Fletcher |
| 1957 | 92 | 70 | .568 | 2 | 3 | - | 1-4 | - | .251 | 3.97 | Peter Fletcher |
| 1958 | 81 | 81 | .500 | 6 | 14 | - | - | - | .254 | 4.74 | Peter Fletcher |
| 1959 | 53 | 109 | .327 | 8 | 50 | - | - | - | .227 | 4.81 | Peter Fletcher |
| 1960 | 67 | 95 | .414 | 7 | 29 | - | - | - | .228 | 4.15 | Peter Fletcher |
| 1961 | 46 | 116 | .284 | 8 | 54 | - | - | - | .211 | 4.74 | Peter Fletcher |
| 1962 | 86 | 76 | .531 | 2 | 10 | 4-1 | 4-3 | 3-4 | .241 | 3.24 | Peter Fletcher |
| 1963 | 75 | 87 | .463 | 4 | 22 | - | - | - | .258 | 3.86 | Peter Fletcher |
| 1964 | 82 | 80 | .506 | 3 | 23 | - | - | - | .243 | 3.38 | Peter Fletcher |
| 1965 | 96 | 66 | .593 | 1 | 0 | 4-3 | 4-2 | 4-1 | .256 | 3.18 | Peter Fletcher |
| 1966 | 107 | 55 | .660 | 1 | 0 | 4-1 | 4-2 | 2-4 | .260 | 3.03 | Peter Fletcher |
| 1967 | 94 | 68 | .580 | 2 | 5 | 3-4 | - | - | .259 | 3.54 | Peter Fletcher |
| 1968 | 112 | 50 | .691 | 1 | 0 | 4-1 | 4-0 | 4-3 | .248 | 2.51 | Peter Fletcher |
| 1969 | 107 | 55 | .660 | 1 | 0 | 3-4 | - | - | .263 | 3.20 | Peter Fletcher |
| 1970 | 105 | 57 | .648 | 1 | 0 | 2-4 | - | - | .269 | 3.22 | Peter Fletcher |
| 1971 | 97 | 65 | .599 | 1 | 0 | 4-3 | 4-1 | 1-4 | .285 | 3.80 | Peter Fletcher |
| 1972 | 99 | 63 | .611 | 2 | 6 | 4-1 | 4-2 | 3-4 | .274 | 3.72 | Peter Fletcher |
| 1973 | 115 | 47 | .710 | 1 | 0 | 3-4 | - | - | .289 | 3.76 | Peter Fletcher |
| 1974 | 103 | 59 | .636 | 1 | 0 | 4-1 | 2-4 | - | .278 | 3.93 | Peter Fletcher |
| 1975 | 102 | 60 | .630 | 1 | 0 | 4-3 | 4-3 | 4-2 | .274 | 3.47 | Peter Fletcher |
| 1976 | 102 | 60 | .630 | 1 | 0 | 4-0 | 2-4 | - | .274 | 3.85 | Peter Fletcher |
| 1977 | 108 | 52 | .675 | 1 | 0 | 4-3 | 2-4 | - | .280 | 3.58 | Peter Fletcher |
| 1978 | 102 | 58 | .638 | 1 | 0 | 4-1 | 4-3 | 1-4 | .280 | 3.50 | Peter Fletcher |
| 1979 | 99 | 61 | .619 | 1 | 0 | 4-0 | 4-3 | 4-0 | .268 | 3.25 | Peter Fletcher |
| 1980 | 97 | 63 | .606 | 1 | 0 | 4-1 | 0-4 | - | .283 | 3.77 | Peter Fletcher |
| 1981 | 91 | 69 | .569 | 2 | 9 | - | - | - | .278 | 3.55 | Peter Fletcher |
| 1982 | 70 | 90 | .438 | 3 | 19 | - | - | - | .258 | 4.03 | Peter Fletcher |
| 1983 | 86 | 74 | .538 | 3 | 2 | - | - | - | .270 | 3.72 | Peter Fletcher |
| 1984 | 61 | 99 | .381 | 4 | 35 | - | - | - | .264 | 4.72 | Peter Fletcher |
| 1985 | 56 | 104 | .350 | 4 | 28 | - | - | - | .222 | 4.38 | Peter Fletcher |
| 1986 | 79 | 81 | .494 | 3 | 19 | - | - | - | .237 | 3.75 | Peter Fletcher |
| 1987 | 69 | 91 | .431 | 4 | 17 | - | - | - | .228 | 3.87 | Peter Fletcher |
| 1988 | 77 | 83 | .481 | 2 | 9 | - | - | - | .236 | 3.74 | Peter Fletcher |
| 1989 | 74 | 86 | .463 | 3 | 15 | - | - | - | .234 | 3.92 | Peter Fletcher |
| 1990 | 73 | 87 | .456 | 3 | 23 | - | - | - | .238 | 4.09 | Peter Fletcher |
| Totals | 5195 | 4638 | .528 | 66-39 | 71-72 | 37-39 | .264 | 4.11 | |||
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