History of Celtics–Heat rivalry in Timeline

The Celtics-Heat rivalry is an intense NBA rivalry, particularly prominent in the playoffs. While not always a consistent head-to-head matchup throughout NBA history, their meetings in the Eastern Conference playoffs, especially in the 2010s and 2020s, have generated considerable drama and high stakes. Key series have featured star players on both sides and have often been hard-fought, going to multiple games. The rivalry is fueled by the teams' competitive balance, contrasting styles of play, and the high stakes of vying for Eastern Conference supremacy and a chance at the NBA championship.

1946: Formation of the Boston Celtics

In 1946, the Boston Celtics were formed.

1981: Pat Riley Becomes Head Coach for the Showtime Lakers

In 1981, Pat Riley became the head coach for the Showtime Lakers, a role he held until 1990, contributing significantly to the Celtics-Lakers rivalry.

November 15, 1988: First Game Between Celtics and Heat

On November 15, 1988, the Boston Celtics and Miami Heat played their first game against each other, with the Celtics winning 84-65 on the road.

1989: Teams Play in Atlantic Division

From 1989 to 2004, both the Boston Celtics and Miami Heat played in the Atlantic Division.

1990: Pat Riley Ends Tenure as Lakers Head Coach

In 1990, Pat Riley's tenure as head coach for the Showtime Lakers ended, marking the conclusion of his time with the team before he joined the Miami Heat in 1995.

April 1991: Reggie Lewis Career High

In April 1991, Reggie Lewis scored a career-high 42 points in a 119-109 victory for the Boston Celtics against the Miami Heat.

December 1995: Celtics Win Double Overtime Game

In December 1995, the Boston Celtics narrowly won a double overtime game against the Miami Heat with a score of 121-120.

1995: Pat Riley Joins the Miami Heat

In 1995, Pat Riley resigned from the Knicks to become president and head coach of the Miami Heat, gaining complete control over basketball operations. This marked a turning point for the Heat, setting them on a path to becoming an NBA Finals contender.

2004: Doc Rivers Coaches Celtics

From 2004 to 2013, Doc Rivers coached the Celtics.

2004: Heat Move to Southeast Division

In 2004, the Miami Heat moved to the newly-formed Southeast Division as part of a realignment, becoming intra-conference opponents with the Boston Celtics.

2006: Miami Heat Win First NBA Championship

In 2006, Pat Riley, along with star players Dwyane Wade and Shaquille O'Neal, led the Miami Heat to their first championship in franchise history.

2007: Formation of the Celtics' Big Three

In 2007, the Celtics' "big three" of Paul Pierce, Kevin Garnett, and Ray Allen was formed, which influenced the Heat's formation of their own big three later on.

2008: Celtics Eliminate Cavaliers in Playoffs

In 2008, the Boston Celtics eliminated the Cleveland Cavaliers in the playoffs during LeBron James' time with Cleveland, contributing to his personal rivalry with the Celtics.

2010: Celtics Eliminate Cavaliers in Playoffs

In 2010, the Boston Celtics eliminated the Cleveland Cavaliers in the playoffs during LeBron James' time with Cleveland, contributing to his personal rivalry with the Celtics.

2010: First Playoff Meeting Between Celtics and Heat

In 2010, the Celtics and Heat met in the playoffs for the first time in the first round. The Celtics won the series in five games. During the first game, Kevin Garnett elbowed Quentin Richardson, leading to a suspension for Garnett and a fine for Richardson. In Game 4, Dwyane Wade scored 46 points.

2010: Celtics Win Over Knicks

Near the end of 2010, The New York Times noted after a Celtics win over the New York Knicks that Boston fans were beginning to "demonize the Miami Heat as surrogate Yankees," drawing parallels to the Yankees-Red Sox rivalry.

2010: Celtics First Postseason Win Against Miami

The 2022 Game 7 win was Boston's first postseason win against Miami since 2010.

2011: Heat Defeat Celtics in Eastern Conference Semifinals

In 2011, the Heat, as the #2 seed, faced the #3 seed Celtics in the Eastern Conference Semifinals. The Heat won the series 4-1, with LeBron James calling the series "personal" due to his previous losses to the Celtics as a Cavalier. In Game 5, James went on a 10-0 scoring run to close out the game.

2012: Allen Signs with the Heat

During the offseason, in 2012 Ray Allen signed with the Heat. A rift between Allen and Rajon Rondo was cited as a factor for Allen's departure from Boston. Garnett, Rondo, and Pierce were reported to hold a grudge with Allen for multiple years after.

2012: Heat-Celtics Rivalry

Following three straight postseason meetings, in 2012 the Heat's rivalry with the Celtics became their most notable since their rivalry with the Knicks, according to Bleacher Report. Jason Reindollar of Bleacher Report called the rivalry between the two teams "official" following their 2012 ECF matchup.

2012: Celtics-Heat Eastern Conference Finals

In 2012, the Celtics and Heat met in the Eastern Conference Finals, a series eventually won by the Heat. As with all seven years these teams have met in the postseason, the winner advanced to the NBA Finals.

2012: Heat Defeat Celtics in Eastern Conference Finals

In 2012, the Heat and Celtics faced off in the Eastern Conference Finals. The Heat won the series 4-3 after winning Game 7 with a score of 101-88. LeBron James had 45 points, 15 rebounds, and five assists in Game 6. James later stated that he feared a loss to the Celtics in 2012 would have caused the Heat's Big Three to break up before winning a championship.

2012: Ainge Criticizes James

In the middle of the 2012-13 season, Celtics general manager Danny Ainge criticized James for his complaints about officiating, causing Heat general manager Pat Riley to issue a statement. Ainge and Riley were noted to have a personal rivalry stemming for 30 years. Ainge would eventually tell The Boston Globe "we're both right. LeBron should stop complaining and I should manage my own team."

2013: Heat Win NBA Championship

In 2013, Ray Allen helped the Heat win their second consecutive championship with a clutch game-tying shot in game six of the Finals.

2013: Rivalry's Intense Nature

In the 2012-13 NBA season, the two teams opened up their season playing against each other in Miami. The game continued the rivalry's intense and physical nature, with Rondo being noted to grab Wade around the neck in the game. Brian Windhorst called Jason Terry a personal rival of Lebron James.

2020: Heat Win Eastern Conference Finals

In 2020, the Celtics and Heat met again in the Eastern Conference Finals, held at a neutral "bubble" site in Orlando due to the COVID-19 pandemic. The Heat won the series in six games. Tyler Herro scored 37 points in Game 4, becoming the fourth player aged 20 or younger to score 30 points in the NBA playoffs.

2022: Celtics Win Game 7 Against Heat

In 2022, the Celtics and Heat faced off in another Eastern Conference Finals matchup, with the Celtics winning Game 7 on the road 100-96, clinching a berth to the 2022 NBA Finals. Jayson Tatum scored 26 points and was awarded the inaugural Larry Bird Trophy as Eastern Conference Finals MVP. This was Boston's first postseason win against Miami since 2010.

2022: Celtics-Heat Eastern Conference Finals

In 2022, the Celtics and Heat met in the Eastern Conference Finals, which the Celtics won. As with all seven years these teams have met in the postseason, the winner advanced to the NBA Finals.

2022: NBA Rivals Week

In the 2022-23 season, the NBA introduced a "Rivals Week," during which the Heat and Celtics played against each other.

2023: Heat Win Eastern Conference Finals

In 2023, the Celtics and Heat met again in the Eastern Conference Finals, with the Heat entering the series as the #8-seed. Despite being down 3-0, the Celtics forced a Game 7, but Miami won the deciding game in Boston, becoming the second #8-seed in NBA history to reach the Finals. Butler won the Larry Bird Trophy as the Eastern Conference finals MVP.

2023: Celtics Regular Season

In the 2023-24 NBA season, the Celtics were dominant, winning a league-leading 64 games in the regular season and clinching the #1-seed in the East.

2024: Celtics Defeat Heat in Playoffs En Route to NBA Finals Victory

In 2024, the Celtics and Heat met in the first round of the playoffs, though the Heat were without Jimmy Butler due to injury. The Celtics were able to dispatch the Heat in five games en route to a 2024 NBA Finals victory.