Phoenix ? After unleashing the Phoenix Suns to a frenetic pace and guiding them to a league-best 62 wins, Mike D’Antoni is the NBA’s coach of the year, a league source said on Monday.

The outcome of the vote first was reported by the East Valley Tribune in Mesa and was confirmed by a source speaking on the condition of anonymity.

The selection is to be announced at a news conference today, two days after Suns point guard Steve Nash was named the league’s most valuable player.

“Mike’s been unbelievable this year,” Nash said at the morning shootaround prior to Monday night’s Game 1 against Dallas in the Western Conference semifinals. “He’s extremely bright and finds a terrific balance that’s so important in this league of holding guys accountable and at the same time giving guys the freedom to use their tools to help the team win.”

D’Antoni spent 20 years in Italy as a star point guard, then a highly successful coach. His first stint as an NBA head coach was with Denver, where he went 14-36 in the lockout-shortened 1999 season.

He later become an assistant to Suns coach Frank Johnson. When Johnson was fired in December 2003, D’Antoni took over.

The young team finished 20-41, but the seeds of this year’s turnaround were sown when Phoenix traded Stephon Marbury and Penny Hardaway to the New York Knicks.

That cleared salary cap room for the signing of Nash and Quentin Richardson before this season. D’Antoni, who loves a fast-paced game, decided to go with a small, speedy lineup because those were his five best players and they all wanted to start. The result was a 31-4 record out of the gate, and a 33-win turnaround.

“It’s an honor, no doubt about it,” D’Antoni said of the impending award. “I mean, (Suns president) Bryan Colangelo had the vision. He’s the one who put all the pieces together and held true and got the players on the floor.”