Joe Mazzulla

Celtics coach Joe Mazzulla, who has faced criticism throughout the series, blamed himself for the 128-102 loss, as Boston fell to the eighth-seeded Heat for a third straight game.

No team in NBA history has recovered to win a seven-game playoff series when trailing 3-0 and Miami has its first chance to wrap up the series at home on Tuesday.

In a road game the Celtics felt they had to win after two shock home losses, Miami's lead grew to as much as 33 points in the third quarter.

Jayson Tatum led Boston with just 14 points while finishing 6 of 18 from the field and Brown was held to 12 points on 6-of-17 shooting. The two All-Stars were a combined 1 of 14 from 3-point range.

"I don't even know where to start," said Brown after the game, per ESPN. "It's an obvious letdown. I feel like we let our fan base, organization down. 

"We let ourselves down. And it was collective. We can point fingers, but in reality, it was just embarrassing.

"To their credit, they’re playing well above their means.They’re ballin’ right now and I’ve got to give them respect.

"Gabe Vincent, Martin, Strus, Duncan Robinson, guys that we should be able to keep under control are playing their [butt] off.

"The series isn't over yet. It's looking bad, but you come out, have some pride about yourself."

The Celtics were favourites to win the NBA Championship before the series began but now look like a team in crisis just seven days on from their big Game 7 win over the Philadelphia 76ers in round two.

"I just didn’t have them ready to play," said Mazzulla, who is in his first season as head coach.

"Whatever it was, whether it was the starting lineup or an adjustment, I have to get them in a better place, ready to play. That’s on me.

"I think some of the defensive identity has been lost and we have to get that back."

While a comeback to reach the Finals from here would be miraculous, Tatum insists Boston has to first and foremost recover some pride.

He said: "It was tough. From the beginning of the game, we were turning the ball over. We didn't shoot the ball well, they shot extremely well and it felt like we never recovered.

"As tough as tonight was, we just got to try to move on. Prepare, get ready, practice, film and stuff for tomorrow.

"Obviously we're in a tough position but we've got to have some pride, bounce back and just be better come Tuesday."

Jimmy Butler has proven inspirational for the Heat in the postseason far but in Game 3 Miami showcased its roster depth.

Gabe Vincent scored a career-high 29 points and Duncan Robinson added 22 off the bench, propelling the Heat to a lopsided victory that puts coach Erik Spoelstra on the brink of a sixth NBA Finals appearance with the team.

The Western Conference finals also look like they are set to reach an earlier than expected conclusion, with the Denver Nuggets enjoying a 3-0 lead over the Los Angeles Lakers ahead of Game 4 on Monday.

The Celtics came out on top 114-98 on Monday, with Jayson Tatum scoring 35 points, 17 of which came in the final quarter.

Boston were far from at their best, particularly when it came to their shooting, with even Tatum off his game, missing seven of the first eight games.

Tatum put it together in the stretch, though, and Mazzulla was delighted to see Boston win without being on the top of their game.

"It's the best. I love games like this, because it’s going to reveal who we are, what we've been doing and where we need to get better," he said. 

"You're not playing as well as you can be, and you're only down one. You've got to be thankful for that, because it could be a lot worse.

"And I thought our guys just stuck with it, with the right mindset."

Tatum added: "I missed so many wide-open 3s. I made the toughest one of the night, and I missed all the easy ones. That kind of got me going. I'll take it.

"I've played enough games, had enough tough shooting nights.

"All really, really good scorers know it just takes one to change your momentum, change how you feel about yourself shooting the ball. And once you see one go in, you just feel a lot better about yourself."

Jaylen Brown chipped in with 22 points, Kristaps Porzingis had 21 and Jrue Holiday finished with 14 to surpass 15,000 career points.

The Celtics are 8-2 for the season and sit second in the Eastern Conference, behind the Philadelphia 76ers.

The Celtics powered to a 135-100 triumph against the Thunder as Boston secured the best NBA record this season and home-court preference for the postseason.

Kristaps Porzingis had 27 points, 12 rebounds and five blocks, while Jayson Tatum finished with 24 points and Jaylen Brown added another 23 as Boston made it 11 straight wins.

"It's very hard to do. We may never be in this position again," Mazzulla said. "We talked about it as a team. We talked about it before the game, to try to treat this game as the clincher.

"To kind of put that on ourselves to be able to do that. I think it was important for us to simulate that. We should enjoy it tonight, and when we wake up tomorrow – nobody cares."

The Celtics extended to 60-16 for the season, though Brown still wants more when the playoffs arrive.

"We're not skipping any steps," Brown said. "Sixty wins. I think we're on track. When the playoffs start, it's back to square one."

Porzingis added: "We deserve it. I think it's possibly going to matter if we follow through with the vision we have for ourselves."

There were some Boston concerns after Brown was questionable with a left-hand injury heading into the Thunder clash, though the Celtics man assured all is well.

"I think it's fine. It's something I'm not concerned with moving forward," he said. "But it bothered me a little bit tonight."

Mazzulla will hope Brown is available when Boston look to improve their record further when hosting the Sacramento Kings on Friday.

And the Boston Celtics left no doubt of their superiority by seizing the franchise's record 18th Larry O'Brien Trophy with one of the most successful post-season stretches of the NBA's modern era, maintaining the level of dominance they displayed while winning a league-best 64 games during the regular season.

Monday's clinical 106-88 victory over the over-matched Dallas Mavericks in Game 5 of the Finals was the fitting conclusion to a stellar play-off run in which the Celtics went 16-3. That winning percentage of .842 is the second-best by an NBA champion since the league moved to a best-of-seven format for all four rounds in 2003, bettered only by the 2017 Golden State Warriors super-team that lost just once during that year's play-offs.

Detractors will be quick to point out Boston's relatively easy path to glory, as they didn't have to face any of the Western Conference's top four seeds in the Finals and also avoided the East's second and third-best teams, the New York Knicks and Milwaukee Bucks, in earlier rounds. 

The numbers suggest it may not have mattered.

Boston finished the regular season with the league's best offensive rating (120.2) and ranked third in defensive rating (109.0), and their 11.2 net rating (the difference between offensive and defensive rating) was the highest by any team since the aforementioned 2016–17 Warriors posted a 12.1 mark en route to capturing their second of three NBA titles within a four-year span.

And the Celtics cruised through the play-offs despite Kristaps Porzingis, one of the team's three 20-point-per-game scorers, missing 12 total games with a leg injury that rendered him to a reduced supporting role for much of the Finals.

So, what were the main factors behind Boston's season-long run of brilliance, one this budding dynasty appears to be fully capable of extending beyond 2024? Here's a closer look:

Three-point markmanship

Head coach Joe Mazzulla's offence is built around the 3-point shot, as the Celtics hoisted up a league-high 3,482 trey attempts during the regular season - 240 more than the next highest team -  and had a staggering 47.1 per cent of their total shots taken from beyond the arc.

If you're taking that many long-distance shots, you better have guys that can make them. And Boston certainly did.

The 2023-24 Celtics became the first team in NBA history with seven players that shot 37 per cent or better from beyond the 3-point line while having 250 or more attempts in a season, and their overall 3-point percentage of .388 ranked second in the league behind only Western Conference regular-season champion Oklahoma City's .389.

And when Boston was hitting its threes, it was virtually unbeatable. The Celtics were 36-1 in the regular season when shooting over 40 per cent from 3-point range, and 8-0 in the post-season when that number was higher than 37.5 per cent.

Disruptive defence

The Celtics also had the NBA's best net rating in 2022-23, a season which memorably ended with a stunning seven-game loss to the eighth-seeded Miami Heat in the Eastern Conference finals. Miami pulled off the upset by beating Boston at its own game, as it shot a scorching 43.4 per cent from 3-point range for the series while the Celtics struggled to a 30.3 per cent success rate.

Dallas, which had the second-highest rate of 3-point shots attempted per total field goal attempts during the regular season at 44.1 per cent, was determined to follow the Heat's blueprint in the Finals, but this Celtics team would have none of it.

The Mavericks made good on over 40 per cent of their shots from beyond the arc in their Game 4 blowout win, but were held under 30 per cent in three of their losses and under 32 per cent overall for the series as Boston's perimeter disruptors - led by six-time All-Defensive Team member Jrue Holiday and Finals MVP Jaylen Brown - put the clamps on Dallas' sensational backcourt duo of Luka Dončić and Kyrie Irving.

Doncic made just 11 of 45 (24.4 per cent) of his 3-point tries for the series, and the ex-Celtic Irving wasn't much better at 27.6 per cent. The Mavericks shot 29.7 per cent as a team from long distance when Holiday was on the court and 29.9 per cent when Brown was in the game.

Dynamic depth

Boston was able to navigate Porzingis' lengthy absence, as well as the shooting struggles of top scorer Jayson Tatum for sizeable portions of the Finals, with relative ease due to strong contribtions from a few of its role players, most notably Al Horford and Sam Hauser.

The 38-year-old Horford stepped into a starting role with Porzingis either unavailable or limited for much of the post-season and handled it with aplomb, especially on the defensive end where the Celtics were a stingier outfit with the grizzled veteran on the court.

Hauser, an undrafted 3-point specialist whose role off the bench steadily increased during the season, made his presence felt as well by going 11 of 23 (47.8 per cent) from beyond the arc for the Dallas series. The Celtics were a plus-17 with him on the court over the five games.

A dynasty brewing?

Under a steady sequence of shrewd moves from former coach turned president of basketball operations Brad Stevens and predecessor Danny Ainge, the Celtics have assembled the NBA's most complete roster and one that has the capability of potentially wreaking havoc for years to come. With Horford hinting at his intentions to return for an 18th NBA season, Boston will have all of its main players back for next season with its core of Tatum, Brown and Porzingis still in their primes. 

Add in a coach in Mazzulla who's still not 36 years old with still room to further perfect his craft, and it's not hard to envision yet another banner or two hanging from the rafters of TD Garden in the near future.

The Celtics clinched the NBA title with a 106-88 victory over the Dallas Mavericks in Game 5 on Monday.

That sealed a 4-1 series win for Boston, who won their 18th Championship, and first since 2008.

And head coach Mazzulla revealed that Manchester City manager Guardiola, who was in attendance for Game 1 of the Finals, played a part in his team's success.

"Dallas has one of the smartest defenses," Mazzulla said.

"We had to be creative to counter them."

"Pep helped me in transitions and how to move guys."

Perhaps when he does eventually leave City, Guardiola might just try his hand in the NBA?

The Celtics announced on Tuesday that he suffered a torn medial retinaculum allowing dislocation of the posterior tibialis tendon.

The injury occurred with 3:27 to play in the third quarter of Sunday's 105-98 win over the Mavericks, which gave Boston a 2-0 lead.

The team described the injury as being rare, and said it is unrelated to a right calf strain that side-lined Porzingis for 10 games earlier in the play-offs.

He has not yet been listed on the official injury report, but the Celtics said his status is day to day.

Celtics coach Joe Mazzulla told reporters that Porzingis is working hard to be ready to play.

“It's a serious injury," Mazzulla said. "At the end of the day, our medical team is not going to put him in any bad situations. So, we’ve taken the decision to play out of his hands.”

Porzingis was seen wearing a brace before speaking with the media on Tuesday.

"I'll see how I am tomorrow," he said, "and obviously I'm going to do everything I can to be out there."

Porzingis helped spark the Celtics in Thursday's 107-89 win in Game 1, tallying 11 points and two blocks in the first quarter in his first game since April 29.

He finished with 20 points on 8-of-13 shooting and six rebounds before recording 12 points and four boards in Game 2.