Seattle Supersonics

41 seasons, 22 playoff seasons, 1 NBA Championship

Best season: 64-18
Worst season: 20-62
2007-08: 20-62  
2006-07: 31-51  
2005-06:

35-47

 
2004-05: 52-30 Playoffs, second round
2003-04: 37-45  
2002-03: 40-42  
2001-02: 45-37 Playoffs, first round
2000-01: 44-38  
1999-00: 45-37 Playoffs, first round
1998-99: 25-25  
1997-98: 61-21 Playoffs, second round
1996-97: 57-25 Playoffs, second round
1995-96: 64-18 Playoffs, NBA Finals
1994-95: 57-25 Playoffs, first round
1993-94: 63-19 Playoffs, first round
1992-93: 55-27 Playoffs, Western Finals
1991-92: 47-35 Playoffs, second round
1990-91: 41-41 Playoffs, first round
1989-90: 41-41  
1988-89: 47-35 Playoffs, second round
1987-88: 44-38 Playoffs, first round
1986-87: 39-43 Playoffs, Western Finals
1985-86: 31-51  
1984-85: 31-51  
1983-84: 42-40 Playoffs, first round
1982-83: 48-34 Playoffs, first round
1981-82: 52-30 Playoffs, second round
1980-81: 34-48  
1979-80: 56-26 Playoffs, Western Finals
1978-79: 52-30 NBA Champions
1977-78: 47-35 Playoffs, NBA Finals
1976-77: 40-42  
1975-76: 43-39 Playoffs, first round
1974-75: 43-39 Playoffs, second round
1973-74: 36-46  
1972-73: 26-56  
1971-72: 47-35  
1970-71: 38-44  
1969-70: 36-46  
1968-69: 30-52  
1967-68: 23*59