In late November 2025, the Oklahoma City Thunder accomplished an impressive 20-1 start to the NBA season. The feat claimed the best 21-game start in the league since the 2015-16 Golden State Warriors started 21-0.
Check out the franchises with the best starts to a season in NBA history below:
Golden State Warriors, 24-0, 2015-16
Cleveland Cavaliers, 15-0, 2024-25
Houston Rockets, 15-0, 1993-94 *
Washington Capitols, 15-0, 1948-49
Dallas Mavericks, 14-0, 2002-03
Boston Celtics, 14-0, 1957-58
Chicago Bulls, 12-0, 1996-97 *
Seattle SuperSonics, 12-0, 1982-83
Atlanta Hawks, 11-0, 1997-98
Los Angeles Lakers, 11-0,1997-98
Portland Trail Blazers, 11-0, 1990-91
Boston Celtics, 11-0, 1964-65 *
Philadelphia 76ers, 10-0, 2000-01
Seattle SuperSonics, 10-0, 1993-94
Boston Celtics, 10-0, 1972-73
* denotes NBA championship that year
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