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| | | | | | | | | | OS | SUD | TB | TMN | | Team Index | Draft History | Starters: Positional - Pitchers | Registers: Batters - Pitchers | Leaders: Batters - Pitchers |  | Thunder Bay Mariners Team Index |
| | Year | W | L | WPct | Finish | GB | Exp Rec | Diff | Avg | ERA | BABIP | Playoffs | Champion | Attendance | Payroll | Balance | | 1948 | 70 | 60 | .538 | 2nd | 6.0 | 67-63 | 3 | .257 | 3.55 | .291 | X | X | 199,500 | $0 | $0 | | 1949 | 76 | 54 | .585 | 2nd | 19.0 | 81-49 | -5 | .268 | 3.22 | .294 | X | X | 248,081 | $0 | $0 | | 1950 | 47 | 83 | .362 | 3rd | 46.0 | 42-88 | 5 | .233 | 4.60 | .309 | | | 146,900 | $0 | $0 | | 1951 | 25 | 105 | .192 | 4th | 62.0 | 18-112 | 7 | .195 | 5.42 | .328 | | | 128,354 | $0 | $0 | | 1952 | 45 | 85 | .346 | 4th | 47.0 | 47-83 | -2 | .236 | 4.93 | .309 | | | 141,597 | $0 | $0 | | 1953 | 45 | 85 | .346 | 4th | 37.0 | 43-87 | 2 | .230 | 4.89 | .313 | | | 149,811 | $0 | $0 | | 1954 | 36 | 94 | .277 | 4th | 57.0 | 32-98 | 4 | .238 | 5.22 | .329 | | | 132,514 | $0 | $0 | | 1955 | 41 | 89 | .315 | 4th | 37.0 | 49-81 | -8 | .244 | 4.73 | .306 | | | 206,282 | $0 | $0 | | 1956 | 54 | 76 | .415 | 4th | 29.0 | 49-81 | 5 | .247 | 4.86 | .316 | | | 180,704 | $0 | $0 | | 1957 | 28 | 102 | .215 | 4th | 63.0 | 26-104 | 2 | .228 | 5.71 | .358 | | | 132,633 | $0 | $0 | | 1958 | 0 | 2 | .000 | 4th | 2.0 | 0-2 | 0 | .182 | 3.00 | .343 | | | 12,183 | $0 | $0 | | Totals | 467 | 835 | .359 | | | 454-848 | 13 | .238 | 4.70 | .316 | 2 | 2 | 1,678,559 | | 0 | | |
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