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, 1993-9

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