Roberto Mancini has told BBC Sport that Manchester City's stunning Premier League title success is "probably the best moment" of his football career.
In an exclusive interview, he also said he did not think Sunday's epic finale would be repeated for a long time.
City needed two goals in injury time to beat QPR and finish top of the table.
"[To win] the championship like this, I think it will be impossible for the next 100 years," he said. "It's probably the best moment for me."
Goals from Edin Dzeko and Sergio Aguero gave City a victory at the Etihad Stadium that meant they finished above last season's champions Manchester United on goal difference.
At one stage, the trophy was going back to Old Trafford, with City trailing 2-1 to QPR and United winning 1-0 at Sunderland.
"When I saw the time - 89 minutes - I thought it was finished," said Mancini.
But then City, who were last crowned champions 44 years ago, hit back with goals in the 92nd and 94th minutes.
"I think we deserve it," added the City boss. "For me, it was really important to win for our supporters. For them, it's an incredible moment."
Mancini, who guided Inter Milan to three consecutive Serie A titles, was happy with his achievement with City.
"To win is always difficult," he said.
"In Italy, in England, in Spain, it's not easy. But, for me, the Premier League is the best championship in Europe. It's very hard to win here."