Eden Hazard made the difference in a thrilling 4-3 away win of Mourinho’s Chelsea at Sunderland.
The young Belgium set up the opening goal by Frank Lampard and then scored twice in an end-to-end encounter at the Stadium of Light.
Asked how he rated Hazard's individual display, Mourinho said: "With me, the best.”
"The talent, we know, but the ambition from the first to the last minutes for me, it was the first time because he has a great talent, but sometimes he does incredible things and after that, he disappears from the game.”
“Normally I don’t like to praise personally a player, but I have to do it, because since the first minute he was amazing.”
Even Mourinho’s counterpart Sunderland boss Gus Poyet was as impressed with Hazard's contribution, admitting: "He was unplayable, Hazard, today.”
Overall the Chelsea coach believes he saw his team’s best away performance and also had special praises for Juan Mata and Willian.
"We played a phenomenal game, the best game away from home. It was top quality, building up well, great creativity with the three attacking players behind Fernando [Torres] - Mata, Willian and Eden - beautiful goals.”
Despite Chelsea conceding three goals The Special One even praised the defensive work of his side, but had to worry till the last minute before celebrating the vitory.
“Even defensively, I think we did well, but the set-pieces... In the last six minutes of extra time, if they had two more corners, they would have won 5-4.”
"When you play so well, you have to win comfortably and not give a headache to the manager in the last six minutes."
The win over Sunderland helped Chelsea to maintain the four point gap to Arsenal and to keep the pressure on title contenders City, who are sitting in third spot.