Bill Russell Dynasty Era team_era 100 11 championships in 13 years for one franchise. The most concentrated championship dominance in sports history. 1960s Celtics Dynasty decade 98 Boston won 11 of 13 championships; most dominant dynasty run in any major sport 1990s Bulls Dynasty decade 88 Bulls won 6 of 8 championships (1991-98). Rockets won 2 during Jordan retirement. Extreme concentration. 4 Pre-Three-Point Era style_period 85 Celtics and Lakers combined for majority of titles; extreme concentration in early NBA 4 Jordan Era 1990s league_era 85 Broader 1990s era still dominated by Bulls with 6 titles. Rockets 2. Pistons 1 at the start. Heavy concentration. 6 1950s NBA decade 82 Minneapolis Lakers won 5 of first 6 BAA/NBA titles; extreme early dynasty concentration 7 Shaq Kobe Lakers Dynasty team_era 80 Lakers won 3 straight (2000-02). Spurs won 99 and 03. High concentration in two franchises. 8 Warriors Dynasty 2010s team_era 78 Warriors won 4, Cavs 1, Raptors 1, Bucks 1. Warriors dominated but some variety. Moderate concentration. 8 2010s Superteam Era decade 78 Warriors won 4, LeBron teams won 2; highly concentrated between few superteams 10 Larry Bird Magic Johnson Era team_era 75 Lakers 5, Celtics 3, Sixers 1, Pistons 2 in 1980s. Concentrated in two franchises but others won too. 10 Hand-Checking Era style_period 75 Bulls (6), Lakers (5), Pistons (2) dominated; high concentration among few franchises 12 1980s Showtime decade 70 Lakers and Celtics dominated but Sixers, Pistons also won. Moderate concentration with 4 champions in the decade. 13 Bubble Era 2020 league_era 65 Single season window. Lakers won. Multiple strong contenders (Clippers, Bucks, Heat). Unusual competitive dynamics. 13 Small Ball Era style_period 65 Multiple champions in the small ball era. Warriors dominated but Raptors, Bucks, Nuggets also won. Moderate concentration. 15 Bad Boys Pistons Era team_era 62 Pistons won 2 straight but Lakers, Celtics also won in the broader late 1980s. Pistons dominated a short window. 15 Load Management Era player_era 62 Different champions each year (Raptors, Lakers, Bucks, Warriors, Nuggets, Celtics). Excellent distribution. 17 2000s Post-Jordan Era decade 60 Spurs 3, Lakers 3, Heat 1, Pistons 1, Celtics 1. Relatively distributed across multiple franchises. 18 Player Empowerment Era player_era 55 Mixed results. Super teams formed but not all won. Some concentration but also upsets. 18 Heatles Era team_era 55 Heat won 2 of 4 titles. Spurs and Mavs also won. Moderate concentration. 18 Expansion Era 1970s league_era 55 Multiple champions across the decade. Celtics, Knicks, Bucks, Lakers, Warriors, Blazers, Bullets, Sonics all won. 21 Big Three Celtics Era team_era 52 Multiple different champions from 2008-2012 (Celtics, Lakers, Mavs, Heat). Relatively distributed. 21 1970s ABA Merger Era decade 52 Multiple different champions (Bucks, Lakers, Knicks, Celtics, Warriors, Blazers, Sonics, Bullets); good parity 21 Lob City Clippers Era team_era 52 Multiple different champions during 2011-2017 window. Heat, Spurs, Warriors, Cavs all won. 24 Grit and Grind Grizzlies Era team_era 48 Multiple different champions during Grizzlies window (2011-2017). No single team dominated. 24 Silver Era 2014-Present league_era 48 Warriors won 4, but also Cavs, Raptors, Lakers, Bucks, Nuggets, Celtics won. Some concentration but diverse. 24 Seven Seconds or Less Era player_era 48 Spurs, Heat, and Celtics won during Suns SSOL window. Suns never won despite innovation. 27 Stern Era 1984-2014 league_era 45 Lakers (10 Finals), Bulls (6 titles), Spurs (5) dominated. But many other champions too across 30 years. 27 Allen Iverson Culture Era player_era 45 Lakers 3-peat dominated. Spurs also won. Championships were concentrated among 2-3 franchises in this window. 29 Superteam Era player_era 42 Heat won 2, Warriors won 3-4 during this window. Some concentration but not absolute dominance. 29 Kareem Skyhook Era player_era 42 Spread across Bucks (1) and Lakers (5 with Kareem). Celtics also won multiple. Moderately concentrated. 29 2020s International Era decade 42 Lakers, Bucks, Warriors, Nuggets, Celtics all won; 5 different champions in 5 years is excellent parity 29 LeBron Era 2010s league_era 42 LeBron made 8 straight Finals but Warriors also dominated. Multiple champions (Heat, Cavs, Spurs, Warriors, Raptors). 33 Warriors Splash Bros Era team_era 38 Warriors won 4 titles in 8 years. Significant concentration of championships with one franchise. 34 Pre-Shot Clock Era league_era 28 Minneapolis Lakers dominated with Mikan. Limited competition in early BAA/NBA. Very concentrated. 35 George Mikan Era player_era 22 Minneapolis Lakers won 5 of 6 titles. Extreme championship concentration in early NBA history. 36 Integration Era 1950s league_era 18 Celtics began dynasty. Minneapolis Lakers before them. Extreme concentration of titles. 36 Wilt Chamberlain Scoring Era player_era 18 Celtics won 11 of 13 championships during Wilts career. Most concentrated championship era in NBA history.