Celtics' 3-1 Collapse to 76ers Ends Season in First-Round Stunner

Key facts

• Boston Celtics blew a 3-1 series lead against the Philadelphia 76ers, losing Game 7 109-100.
• Jayson Tatum was ruled out for Game 7 due to left knee stiffness, described as 'back-of-the-knee stiffness' by coach Joe Mazzulla.
• Tatum averaged 23.3 points, 10.7 rebounds, and 6.8 assists in the playoffs, shooting 47.5% from the field.
• Celtics shot 13-of-47 on 3-pointers in Game 7, including six consecutive misses in crunch time.
• Derrick White started the series 5-of-25 from deep and struggled with efficiency throughout.
• Philadelphia 76ers were 0-for-18 in playoff series when trailing 3-1 before this comeback.
• Jaylen Brown was held under his season average of 28.7 points per game in five of the first six games.
• The 76ers got healthy with Joel Embiid, Tyrese Maxey, Paul George, and rookie VJ Edgecombe contributing.

A Season of Promise Ends in Heartbreak

The Boston Celtics, winners of 56 games and favorites to emerge from the Eastern Conference, saw their season end in a stunning 109-100 loss to the Philadelphia 76ers in Game 7, blowing a 3-1 series lead in the process. The defeat marks the first time in franchise history that the Celtics have squandered such a lead in the playoffs, and it comes after a year in which star Jayson Tatum returned from a torn right Achilles tendon suffered last May. For a team that had championship aspirations, the collapse was swift and brutal. After taking a commanding 3-1 advantage, Boston dropped three straight games, with the final two played without Tatum at full strength. The Celtics entered the postseason as the No. 2 seed, but their path was blocked by a 76ers team that finally got healthy and found its rhythm at the perfect moment.

Tatum's Injury Clouds Game 7

Jayson Tatum was ruled out for Game 7 because of left knee stiffness, a development that surfaced just hours before tip-off. The six-time All-Star forward had sat out the entire fourth quarter of Game 6 due to left calf tightness, and though the team initially reported no injuries on Friday, as questionable before being downgraded. Coach Joe Mazzulla told reporters that Tatum came in with 'knee discomfort' and that the decision to hold him out was made jointly by the medical staff and the coaching staff. 'We made a decision for him,' Mazzulla said, describing the issue as 'back-of-the-knee stiffness' and calling Tatum day-to-day. Tatum had averaged 23.3 points, 10.7 rebounds, and 6.8 assists in the playoffs, shooting 47.5% from the field and 36.5% from three-point range.

Shooting Woes Doom the Celtics

The Celtics ranked eighth in the NBA during the regular season, shooting 36.7% from three-point range, but that accuracy evaporated in the playoffs. Over the first six games, Boston shot 35% from beyond the arc, but in their three losses—Game 2, Game 5, and Game 6—they made less than 30% of their threes, going 13-of-50, 11-of-39, and 12-of-41, respectively. Game 7 was no different: the Celtics finished 13-of-47 from deep, including six consecutive misses in crunch time. Derrick White, a hero during Boston's 2024 title run, started the series 5-of-25 from three-point range and, despite a hot start in Game 7, went cold again late. His efficiency had dipped during the regular season, and he could not recapture his playoff magic when it mattered most.

Brown's Struggles Under the Spotlight

Jaylen Brown, who had a stellar regular season averaging 28.7 points per game, was held below that mark in five of the first six games of the series. He shot 40% from the field in both Game 5 and Game 6 losses and struggled from the free-throw line, going 2-of-6 in Game 6. When his shot was not falling, Brown failed to create in other ways: he managed only two assists and one rebound in Game 6 while scoring 18 points. He found a rhythm too late in Game 7, but by then the Celtics were already in a hole they could not dig out of. The team needed more from its co-star, especially with Tatum sidelined.

Philadelphia's Historic Comeback

The 76ers became the first team in franchise history to overcome a 3-1 playoff deficit, having previously been 0-for-18 in such scenarios. Philadelphia got healthy at the right time, with Joel Embiid, Tyrese Maxey, and Paul George all available and playing at a high level. Rookie VJ Edgecombe also provided contributions beyond his years, giving the Sixers a boost off the bench. The series turned when the 76ers found their mojo after dropping three of the first four games. They won three straight, including two at TD Garden, to stun the Celtics and advance to the second round. For Boston, the loss was a devastating end to a season that had promised so much, especially after last year's second-round exit to the New York Knicks.

What Comes Next for Boston

The Celtics now face an offseason of questions. Tatum's health will be a primary concern, as he has now suffered two significant lower-body injuries in consecutive postseasons. The team must also evaluate its roster construction, particularly the reliance on three-point shooting that proved brittle under playoff pressure. For a franchise that has not won a title since 2008, the margin for error is thin. The Celtics had the talent and the regular-season record to contend, but their inability to adapt when the shots stopped falling exposed a fatal flaw. The 76ers, meanwhile, will carry their momentum into the next round, having pulled off one of the most improbable comebacks in recent NBA history.

The bottom line

• Boston's 56-win season ended with a first-round exit after blowing a 3-1 series lead to the 76ers.
• Jayson Tatum missed Game 7 due to left knee stiffness, compounding the Celtics' offensive struggles.
• The Celtics shot below 30% from three-point range in all four losses, including 13-of-47 in Game 7.
• Derrick White's shooting slump (5-of-25 to start the series) and Jaylen Brown's inconsistency hurt Boston.
• Philadelphia completed its first-ever 3-1 comeback, with key contributions from Embiid, Maxey, George, and rookie Edgecombe.
• Boston's reliance on three-point shooting proved a fatal weakness when the shots stopped falling.