Davis scored a season-high 43 points and grabbed 17 rebounds, and New Orleans overcame an 11-point, fourth-quarter deficit to beat NY 129-124.
The team shot 35-for-91 from the field (38.5 percent) and 5-of-33 from 3 (15.2 percent).
Kyrie Irving had 20 points for the Celtics, who had won two in a row.
It was a no-show performance, a head-scratching occurrence after what the Celtics were able to do against the Raptors one night earlier. "There was a point where we stopped competing", he said at the post-game presser. They weren't expected to do as much, and I think that the amount of pressure that we put on them to perform every single night is something that they have to get used to, being part of a great team like this. It was an emotional win for us.
"It's definitely a challenge, but the best teams in the league do it", he said of playing twice in 24 hours.
"We want him to be aggressive". "We talked after the last time we played (last Friday in Salt Lake City), and then he went out and had 27 (the next game in Portland)". I felt like we addressed it a couple times.
"But I'm going to shoot my way out of this and just stay locked in and stay focused".
Donovan Mitchell broke out of his recent shooting struggles with 28 points and 5 three-pointers to lead Utah. Kyle Lowry tweaked his right leg/ankle late in the third quarter but finished with eight points, eight assists and seven rebounds, while Danny Green was a ideal 7-for-7 from the field for 17 points.
Djokovic crushes Zverev at ATP Finals
And a double-fault from Zverev in the next game gifted Djokovic the set after 48 minutes. I'm looking forward to that match. I think tennis is in good hands.
Jayson Tatum is continuing the momentum of his strong rookie season with 15.9 points, 6.9 rebounds and 2.4 assists, while Marcus Morris, Jaylen Brown, Al Horford and Gordon Hayward are all averaging double-figure scoring.
The Celtics looked like a completely different team in the fourth quarter and overtime, finally playing with aggressiveness on offense. In came Guerschon Yabusele, Brad Wanamaker, Daniel Theis and Semi Ojeleye to counter Utah's run.
"Great is great for a reason", Stevens said. "We weren't going anywhere with what we were doing, so it was better just to mix it up, see if those guys could b ring us some live legs and let's go".
But following Saturday's 98-86 loss by the hands of the Jazz, Stevens didn't have any patience for his team's lack of effort and poor execution.
Through 16 games, the Boston Celtics' offense hasn't lived up to its enormous potential.
The Celtics never led during the second quarter and were behind by as many as 12 before getting within 50-45 by the break. Rudy Gobert had 12 points and nine rebounds, and Derrick Favors finished with 10 points and eight boards.
To his credit, Kyrie Irving did play a "team game" on Friday night, finishing with 11 assists on route to a 123-116 overtime win.