"Terrible performance," Nash said. "I'm embarrassed. Obviously just a disastrous effort. We just have to wash it away and pick it up tomorrow."
It was a sweet victory for D'Antoni, who rode his high-scoring offensive system to an average of 58 wins in his four full seasons in Phoenix before he and the Suns parted ways after a first-round loss to San Antonio in 2008.
He hasn't been nearly as successful with an inferior roster in New York, where he coached his 100th game Tuesday and recorded just his 36th victory. He improved to 2-1 against the Suns, though said before the game the emotions weren't the same as they were last season.
"I've got enough problems in New York that I don't really reflect on what they're doing," D'Antoni said.
Phoenix missed the playoffs last season, but has rededicated itself to playing fast under Alvin Gentry and was looking to start 15-3 for the first time since doing so under D'Antoni in 2004-05. But the Suns never slowed the Knicks down for long, even when they went to a zone in the third quarter.
"Mike did a great job. He had them well prepared," Gentry said. "They shot the ball well and played well defensively. Obviously they did, we didn't get 100 points."
New York doubled its 13-point halftime lead midway through the third quarter and led by 31 in the fourth. None of the Knicks' previous three wins had come by more than seven points.
"Third quarters have been really tough for us, how we start third quarters," Knicks guard Chris Duhon said. "But we came out and we took care of the game mostly in the early parts of the third quarter."
Wilson Chandler scored 14 points for the Knicks and Larry Hughes had 11 points and a season-high 12 assists.
New York fell two points shy of its highest-scoring quarter of the season, opening a 39-28 lead. Chandler (12), Gallinari and Lee (10 apiece) were already in double figures after the first 12 minutes.
The Knicks opened the second quarter with a 9-4 burst, extending the lead to 48-32 on Gallinari's jumper. The Suns cut it to six later in the period, but New York pushed it back to 15, repeatedly getting layups and dunks, and led 71-58 at the half.
Amare Stoudemire, Jason Richardson and Alando Tucker scored 14 points for Phoenix, which ends a four-game trip Wednesday at Cleveland.
NOTES: Gentry was chosen Tuesday as Western Conference coach of the month, the fifth Phoenix coach to win the honor. D'Antoni claimed it a franchise-record four times. ... Phoenix played without reserve guard Leandro Barbosa, who sprained his left ankle Sunday in Toronto and also will miss Wednesday's game. ... The Knicks also scored 71 points in the second half against Philadelphia on Oct. 31. ... The Suns had won nine of the previous 11 meetings.