Atlantic Division (NBA)
The Atlantic Division began its existence at the start of the 1970, 71 season. The league expanded from 14 teams to 17 teams that year. Four franchises formed the inaugural roster for this new grouping. The Boston Celtics, New York Knicks, and Philadelphia 76ers arrived from the Eastern Division. A new expansion team called the Buffalo Braves joined them. This realignment created two conferences with two divisions each. The Western Conference and the Eastern Conference now held these new structures.
Franchise movements reshaped the division over five decades. An American Basketball Association team known as the New York Nets merged into the NBA in 1976. They relocated to become the New Jersey Nets by 1977. The Washington Bullets entered the division in 1978 before leaving later. The Charlotte Hornets joined temporarily during the 1988 season only. Miami Heat and Orlando Magic arrived from other divisions in the late 1980s and early 1990s. Toronto Raptors joined from the Central Division in 2004. Three teams departed to form the Southeast Division that same year. The New Jersey Nets moved again to Brooklyn in 2012. These shifts left five current members standing today.
Ten different teams have won an NBA championship while part of this division. The Boston Celtics hold the record with seven titles earned within these borders. Five other franchises secured one title each during their tenure here. The Knicks, 76ers, and Raptors all claimed a single championship. All winners except the 1972, 73 Knicks were also division champions. The Celtics alone captured 26 Atlantic Division titles. This dominance spans multiple generations of players and coaches. Their success defines the competitive history of the group.
Beginning with the 2021, 22 season, the division champion receives a new award. It is called the Nat Sweetwater Clifton Trophy. Hall of Famer Nathaniel Clifton inspired its name. He became one of the first African American players to sign an NBA contract. Clifton joined the New York Knicks in 1950. The trophy itself features a crystal ball design. This honor recognizes his pioneering role in league integration. The naming ceremony marked a shift toward honoring historical figures.
The 1982, 83 season saw every team finish above .500 winning percentage. That year all five teams posted records exceeding 50 percent wins. Another anomaly occurred in 1983, 84 when all members qualified for the playoffs. These events remain unique achievements in divisional history. No other season has matched such collective success across the board. The Boston Celtics achieved a 68, 14 record during this era. Philadelphia finished 9, 73 that same year creating stark contrast. Such extremes highlight the volatility of professional basketball standings.
Competitive dynamics define relationships between major franchises like the Celtics and Knicks. The rivalry between these two teams spans decades of play. Boston and Philadelphia also share a long-standing competitive history. New York Knicks face Brooklyn Nets in frequent matchups. Toronto Raptors maintain rivalries with Northeastern United States teams despite location. These conflicts drive attendance and media attention throughout the region. Games often determine playoff seeding and conference standing. The intensity of these contests shapes the identity of the division.
Up Next
Continue Browsing
Common questions
When did the Atlantic Division begin its existence?
The Atlantic Division began its existence at the start of the 1970, 71 season. The league expanded from 14 teams to 17 teams that year.
Which four franchises formed the inaugural roster for the Atlantic Division?
Four franchises formed the inaugural roster for this new grouping. The Boston Celtics, New York Knicks, and Philadelphia 76ers arrived from the Eastern Division while a new expansion team called the Buffalo Braves joined them.
How many NBA championships have ten different teams won while part of the Atlantic Division?
Ten different teams have won an NBA championship while part of this division. The Boston Celtics hold the record with seven titles earned within these borders.
What award does the division champion receive beginning with the 2021, 22 season?
Beginning with the 2021, 22 season, the division champion receives a new award called the Nat Sweetwater Clifton Trophy. Hall of Famer Nathaniel Clifton inspired its name after he became one of the first African American players to sign an NBA contract in 1950.
In which season did every team finish above .500 winning percentage in the Atlantic Division?
The 1982, 83 season saw every team finish above .500 winning percentage. That year all five teams posted records exceeding 50 percent wins.