3 league titles: 1983, 1970, 1966.
Franchise history
Regular-season record. Division finish uses that season's division alignment.
| 2026 | 79 | 82 | 0 | .491 | 4th AL East | — |
| 2025 | 75 | 87 | 0 | .463 | 5th AL East | — |
| 2024 | 91 | 71 | 0 | .562 | 2nd AL East | Playoffs0-2 |
| 2023 | 101 | 61 | 0 | .623 | 1st AL East | Playoffs0-3 |
| 2022 | 83 | 79 | 0 | .512 | 4th AL East | — |
| 2021 | 52 | 110 | 0 | .321 | 5th AL East | — |
| 2020 | 25 | 35 | 0 | .417 | 4th AL East | — |
| 2019 | 54 | 108 | 0 | .333 | 5th AL East | — |
| 2018 | 47 | 115 | 0 | .290 | 5th AL East | — |
| 2017 | 75 | 87 | 0 | .463 | 5th AL East | — |
| 2016 | 89 | 73 | 0 | .549 | 2nd AL East | Playoffs0-1 |
| 2015 | 81 | 81 | 0 | .500 | 3rd AL East | — |
| 2014 | 96 | 66 | 0 | .593 | 1st AL East | Playoffs3-4 |
| 2013 | 85 | 77 | 0 | .525 | 3rd AL East | — |
| 2012 | 93 | 69 | 0 | .574 | 2nd AL East | Playoffs3-3 |
| 2011 | 69 | 93 | 0 | .426 | 5th AL East | — |
| 2010 | 66 | 96 | 0 | .407 | 5th AL East | — |
| 2009 | 64 | 98 | 0 | .395 | 5th AL East | — |
| 2008 | 68 | 93 | 0 | .422 | 5th AL East | — |
| 2007 | 69 | 93 | 0 | .426 | 4th AL East | — |
| 2006 | 70 | 92 | 0 | .432 | 4th AL East | — |
| 2005 | 74 | 88 | 0 | .457 | 4th AL East | — |
| 2004 | 78 | 84 | 0 | .481 | 3rd AL East | — |
| 2003 | 71 | 91 | 1 | .439 | 4th AL East | — |
| 2002 | 67 | 95 | 0 | .414 | 4th AL East | — |
| 2001 | 63 | 98 | 1 | .392 | 4th AL East | — |
| 2000 | 74 | 88 | 0 | .457 | 4th AL East | — |
| 1999 | 78 | 84 | 0 | .481 | 4th AL East | — |
| 1998 | 79 | 83 | 0 | .488 | 4th AL East | — |
| 1997 | 98 | 64 | 0 | .605 | 1st AL East | Playoffs5-5 |
| 1996 | 88 | 74 | 1 | .543 | 2nd AL East | Playoffs4-5 |
| 1995 | 71 | 73 | 0 | .493 | 3rd AL East | — |
| 1994 | 63 | 49 | 0 | .563 | 2nd AL East | — |
| 1993 | 85 | 77 | 0 | .525 | 3rd AL East | — |
| 1992 | 89 | 73 | 0 | .549 | 3rd AL East | — |
| 1991 | 67 | 95 | 0 | .414 | 6th AL East | — |
| 1990 | 76 | 85 | 0 | .472 | 5th AL East | — |
| 1989 | 87 | 75 | 0 | .537 | 2nd AL East | — |
| 1988 | 54 | 107 | 0 | .335 | 7th AL East | — |
| 1987 | 67 | 95 | 0 | .414 | 6th AL East | — |
| 1986 | 73 | 89 | 0 | .451 | 7th AL East | — |
| 1985 | 83 | 78 | 0 | .516 | 4th AL East | — |
| 1984 | 85 | 77 | 0 | .525 | 5th AL East | — |
| 1983 | 98 | 64 | 0 | .605 | 1st AL East | Champions7-2 |
| 1982 | 94 | 68 | 1 | .580 | 2nd AL East | — |
| 1981 | 59 | 46 | 0 | .562 | 2nd AL East | — |
| 1980 | 100 | 62 | 0 | .617 | 2nd AL East | — |
| 1979 | 102 | 57 | 0 | .642 | 1st AL East | Lost final6-5 |
| 1978 | 90 | 71 | 0 | .559 | 4th AL East | — |
| 1977 | 97 | 64 | 0 | .602 | 2nd AL East | — |
| 1976 | 88 | 74 | 0 | .543 | 2nd AL East | — |
| 1975 | 90 | 69 | 0 | .566 | 2nd AL East | — |
| 1974 | 91 | 71 | 0 | .562 | 1st AL East | Playoffs1-3 |
| 1973 | 97 | 65 | 0 | .599 | 1st AL East | Playoffs2-3 |
| 1972 | 80 | 74 | 0 | .519 | 3rd AL East | — |
| 1971 | 101 | 57 | 0 | .639 | 1st AL East | Lost final6-4 |
| 1970 | 108 | 54 | 0 | .667 | 1st AL East | Champions7-1 |
| 1969 | 109 | 53 | 0 | .673 | 1st AL East | Lost final4-4 |
