Miami Heat

24 seasons, 16 playoff seasons, 2 NBA Championships

Best season: 61-21
Worst season: 15-67
2011-12:

46-20

 NBA Champions
2010-11:

58-24

 Playoffs, NBA Finals
2009-10:

47-35

 Playoffs, first round
2008-09:

43-39

 Playoffs, first round
2007-08: 15-67  
2006-07: 44-38 Playoffs, first round
2005-06: 52-30 NBA Champions
2004-05: 59-23 Playoffs, Eastern Finals
2003-04: 42-40 Playoffs, second round
2002-03: 25-57  
2001-02: 36-46  
2000-01: 50-32 Playoffs, first round
1999-00: 52-30 Playoffs, second round
1998-99: 33-17 Playoffs, first round
1997-98: 55-27 Playoffs, first round
1996-97: 61-21 Playoffs, Eastern Finals
1995-96: 42-40 Playoffs, first round
1994-95: 32-20  
1993-94: 42-40 Playoffs, first round
1992-93: 36-46  
1991-92: 38-44 Playoffs, first round
1990-91: 24-58  
1989-90: 18-64  
1988-89: 15-67