17 Championship Titles

Lore & Background

The Celtics finished second in East Group C in the inaugural 2023 NBA In-Season Tournament, behind the Orlando Magic, going 3–1 in the group stage but losing a three-way tiebreaker via point differential. They were eliminated from the tournament with a loss to the Indiana Pacers in the quarterfinals. The Celtics had the best record (64–18) in the NBA and proceeded through the playoffs in dominant fashion. They defeated the Dallas Mavericks in five games during the NBA Finals, winning the franchise's first championship since 2008, and 18th championship in team history, breaking a tie with the Los Angeles Lakers to hold the NBA record for most championships. The result was the most dominant Celtics championship run since 1965, with only three losses in the playoffs and a season total of 80 wins, tying the 2007–08 Celtics for the second-best mark in franchise history (behind the 1985–86 team's 82 wins).

In Their Own Story

The arena lights dimmed until only the green silk of the banners glowed under the rafters. An old janitor paused beneath them, his gaze tracing the faded fibers of the 1957 banner to the pristine sheen of the 2008 addition. In the silence, the phantom roar of a thousand fans from decades past seemed to echo off the concrete walls—a sound that never truly left Boston. A young rookie stepped into the tunnel, clutching his jersey, feeling the weight of history pressing down on him. The janitor smiled. He knew the boy understood: in Boston, you don't just play for tonight; you play to add another piece of green silk to the ceiling.

Reader's Guide

Following their championship victory, multiple commentators considered the 2023–24 Celtics to be among the greatest teams in NBA history. With a playoff record of 16–3, the Celtics were second only to the 2016–17 Golden State Warriors for the best postseason record since all four NBA playoff rounds became best-of-seven contests in 2003. This record, however, would only be matched two years later by the New York Knicks. The Celtics drew an average home attendance of 19,156 in 41 home games in the 2023–24 NBA season.

Did You Know?

• The Celtics won their 18th championship in team history, breaking a tie with the Los Angeles Lakers for the NBA record.
• The Celtics had the best regular-season record (64–18) and won the title, the first team to do so since the 2020–21 Milwaukee Bucks.
• The Celtics clinched the #1 seed in the Eastern Conference for the first time since 2017 after beating the Chicago Bulls on March 23, 2024.

Historical Dominance and Record-Breaking Success

This victory broke a longstanding tie with the Los Angeles Lakers to establish a new franchise record for the most titles in league history. The team's performance was nothing short of historic; they secured the best regular-season record in the entire NBA at 64–18, finishing fourteen games ahead of their closest conference rival. Their playoff run was equally commanding, featuring only three losses across sixteen victories to defeat the Dallas Mavericks in five games during the Finals. This dominance resulted in a staggering season total of 80 wins, the second-highest mark ever recorded by the organization. By becoming the first team since the 2017 Golden State Warriors to combine the league's best regular-season record with a championship title, the Celtics cemented their status as one of the greatest teams in NBA history. Their postseason efficiency was matched only by that 2017 Warriors squad until two years later, highlighting an era of unprecedented consistency and excellence for the franchise.

Strategic Roster Overhauls and Key Acquisitions

The foundation for this championship run was built upon significant roster changes initiated before the season began. For the first time since 2014, the team operated without veteran point guard Marcus Smart, who was traded to Memphis in a complex deal that brought forward Kristaps Porziņģis from Washington. The front office further strengthened their backcourt by acquiring two-time All-Star Jrue Holiday from Portland in exchange for Malcolm Brogdon and Robert Williams III, along with future draft assets. These strategic moves proved vital as the squad navigated the season without missing a beat. Although Porziņģis missed nearly the entire playoff run due to injury, his return for the Finals provided crucial depth before he suffered an ankle setback in Game 2. Despite these challenges and the absence of key contributors at various points, the core group maintained their momentum, clinching the Atlantic Division title for a third consecutive year and securing the number one seed in the Eastern Conference by March.

In-Season Tournament Performance and Regular Season Milestones

The Celtics performed well initially, winning East Group C with a 3–1 record and advancing via a three-way tiebreaker based on point differential. However, their tournament journey ended in the quarterfinals following a loss to the Indiana Pacers. Beyond this new format, the team achieved numerous regular season milestones, including becoming the first franchise to clinch a playoff berth early in March. They extended their dominance by winning the Atlantic Division championship and securing home-court advantage throughout the entire postseason for the first time since 2008. This consistency allowed them to finish with 64 wins, marking their first season with sixty or more victories since 2009.

Playoff Trajectory and Legacy of Greatness

The Celtics' path to the championship was characterized by swift efficiency against formidable opponents. They dispatched the Miami Heat and Cleveland Cavaliers in five games each during the early rounds before sweeping the Indiana Pacers to reach their second NBA Finals in three years. Facing the Dallas Mavericks, Boston raced out to a 3–0 series lead, overcoming a significant blowout loss in Game 4 to close out the title in Game 5 back in Boston. This run was described as the most dominant championship performance by the franchise since 1965. Following their victory, multiple commentators ranked this squad among the greatest teams ever assembled in the league.