NBA Regular Season Team Records WINS and LOSSESMost games won, Season 72 Chicago (72-10) 1995-96 69 Los Angeles (69-13) 1971-72 69 Chicago (69-13) 1996-97 Most games lost, Season 73 Philadelphia (9-73) 1972-73 71 Dallas (11-71) 1992-93 71 Denver (11-71) 1997-98 STREAKS Most consecutive games won 33 LA Lakers (11/5/71 - 1/7/72) 20 Milwaukee (2/6/71 - 3/8/71) 19 LA Lakers (2/4/00 - 3/13/00) Most consecutive games won, start of season 15 Washington (11/3/48 - 12/4/48) 15 Houston (11/5/93 - 12/2/93) Most consecutive games won, end of season 15 Rochester (2/17/50 - 3/19/50) Most consecutive games lost (over two seasons) 24 Cleveland (3/19/82 - 11/5/82) (last 19 gms - 1981-82; first 5 gms - 1982-83) Most consecutive games lost, one season 23 Vancouver (2/16/96 - 4/2/96) 23 Denver (12/19/97 - 1/23/98) Most consecutive games lost, start of season 17 Miami (11/5/88 - 12/12/88) 17 LA Clippers (2/5/99 - 3/10/99) Most consecutive games lost, end of season 19 Cleveland (3/19/82 - 4/18/82) Most consecutive home games won 44 Chicago (3/30/95 - 4/4/96) (7 gms-1994-95; 37 gms-1995-96) Most consecutive home games won, start of season 37 Chicago (11/3/95 - 4/4/96) Most consecutive home games won, end of season 31 Boston (12/10/85 - 4/13/86) Most consecutive home games lost 19 Dallas (11/6/93 - 1/21/94) Most consecutive home games lost, start of season 19 Dallas (11/6/93 - 1/21/94) Most consecutive home games lost, end of season 14 Orlando (3/1/90 - 4/20/90) Most consecutive road games won 16 Los Angeles (11/6/71 - 1/7/72) Most consecutive road games won, start of season 12 New York (10/15/69 - 12/10/69) Most consecutive road games won, end of season 8 Milwaukee (3/4/73 - 3/27/73) Most consecutive road games lost 43 Sacramento (11/21/90 - 11/22/91) (37 gms in 1990-91; 6 gms in 1991-92) Most consecutive road games lost, start of season 29 Dallas (11/10/92 - 3/13/93) Most consecutive road games lost, end of season 37 Sacramento (11/21/90 - 4/19/91) WINNING PERCENTAGE Highest winning percentage, season.878 Chicago (72-10) 1995-96 Lowest winning percentage, season .110 Philadelphia (9-73) 1972-73 Highest winning percentage, home games, season .976 Boston (40-1) 1985-86 Lowest winning percentage, home games, season .125 Providence (3-21) 1947-48 Highest winning percentage, road games, season .816 Los Angeles (31-7) 1971-72 Lowest winning percentage, road games, season .000 Baltimore (0-20) 1953-54
No NBA team has never lost a game.
The most losses by a team in NBA history was by the 1972-73 Philadelphia 76ers who had a regular season record of 9-73.
Don Nelson
Cleveland Cavaliers
In the 1968 NBA Finals the Boston Celtics defeated the Los Angeles Lakers in six games.
No NBA team has never lost a game.
The most losses by a team in NBA history was by the 1972-73 Philadelphia 76ers who had a regular season record of 9-73.
Celtics
Don Nelson
The Celtics.
Cleveland Cavaliers
In the 1968 NBA Finals the Boston Celtics defeated the Los Angeles Lakers in six games.
None
Chicago Bulls have reached 6 NBA championship finals and have never lost. They are the only team to been to more than one NBA Championship final and never lost.
Boston defeated the Los Angeles Lakers in the 2008 NBA Finals, four games to two.
The Orlando Magic lost.
The Rockers defeated the Orlando Magic, 4 games to 0, to win the 1995 NBA championship.