The Suns were making their first Finals appearance and just their second postseason appearance in their eighth season in the league. The Suns would not return to the Finals until 1993.
Jo Jo White won NBA Finals MVP honors, joining John Havlicek as the only Celtics players to win the honor. The Finals MVP award was not given out until 1969, meaning there was no MVP named for the Celtics' first 10 championships.
The Celtics had home-court advantage for the Finals, which were played under the 2-2-1-1-1 format. The Celtics swept the four regular-season meetings between the teams in the 1975-76 season.
| Team | Suns | Celtics |
| Regular Season | 42-40, 3rd in Midwest Division | 54-28, 1st in Atlantic Division |
| Conference Semifinals | Def. (2) Seattle SuperSonics, 4-2 | Def. (5) Buffalo Braves, 4-2 |
| Conference Finals | Def. (1) Golden State Warriors, 4-3 | Def. (2) Cleveland Cavaliers, 4-2 |
Dave Cowens led Boston with a triple-double, finishing with 25 points, 21 rebounds and 10 assists. Alvan Adams led the Suns with 26 points.
John Havlicek came off the bench for the second consecutive game, leading the Celtics with 23 points. Dave Cowens, the hero of Game 1, had 16 points and 12 rebounds for Boston. Paul Westphal led Phoenix with 28 points, while Alvan Adams chipped in with 19 points and 15 rebounds.
The Suns' Ricky Sobers and the Celtics' Kevin Stacom were ejected after a fight in the second quarter. It was the second time the two had fought during the season.
Alvan Adams scored 12 of his 33 points in the final five minutes to lead the Suns, who snapped an eight-game losing streak to the Celtics. Jo Jo White led the Celtics with 24 points. Dave Cowens had 13 points and 17 rebounds, but also picked up one of the four technical fouls called on the Celtics.
Phoenix finished the game 35-of-41 from the free throw line, earning four more points from the charity stripe than the Celtics (31-of-39). Paul Westphal led the Suns with 28 points and nine assists. White led Boston with 25 points, five assists and four steals. Despite the high number of fouls called, the only player to foul out was Celtics guard Charlie Scott.
Both teams scored six points in the first overtime, forcing a second overtime session. Boston took a 109-106 lead, but Dick Van Arsdale hit a jumper to cut the lead to one and the Suns got a steal on the next possession, leading to a Curtis Perry layup, putting the Suns up 110-109. Havlicek responded by hitting a running jumper to put Boston up 111-110, sending hundreds of fans on to the court in celebration. One of the fans attacked referee Richie Powers and had to be dragged away by the police. In all the confusion, few people noticed that Powers indicated two seconds remained and the Suns would be inbounding from under their own basket.
After 10 minutes, the court was finally cleared, and Suns coach John MacLeod called a timeout, even though the Suns had none, resulting in a technical foul. Jo Jo White made the technical free throw for the Celtics, but the Suns got to advance the ball to midcourt to attempt a game-tying shot. Gar Heard made a long turnaround jumper at the buzzer, forcing a third overtime.
With the fans still lining the court and police holding them back, the Celtics took a six-point lead in the third overtime, before Paul Westphal made back-to-back baskets to cut the lead to two with 12 seconds left. White managed to dribble out the clock for Boston, sending the fans streaming onto the court for the final time.
White led all scorers with 33 points, and he and Havlicek were the only Celtics starters who did not foul out. Dave Cowens had 26 points and 19 rebounds before picking up his sixth foul. With three starters disqualified after picking up six fouls, the Celtics got eight points from Glen McDonald, including six in the third overtime. The Suns were led by Westphal and Ricky Sobers, who each scored 25 points. All five Suns starters scored at least 17 points, accounting for 110 of Phoenix's 126 points.
When the NBA compilied its list of the 60 Greatest Playoff Moments to coincide with the league's 60th anniversary, this game was ranked No. 6 on the list.
Charlie Scott led Boston with 25 points and Dave Cowens had 21 points and 17 rebounds. Jo Jo White had 15 points, five rebounds and six assists, earning series MVP honors. He finished the series averaging a team-high 21.7 points per game and 5.8 assists per game.
Alvan Adams led the Suns with 20 points and six assists. Phoenix was out-rebounded 53-39 in the final game of the series.




