Chelsea boss Frank Lampard said Christian Pulisic showed the "full package" after opening his Blues account with a 'perfect' hat-trick in a 4-2 win at Burnley.
The 21-year-old United States captain had struggled to make an impact since his summer arrival from Borussia Dortmund and was making his first Premier League start since August.
Lampard had seen enough from a late cameo at Ajax in Wednesday's Champions League win to give him another chance and he took it in fine style with goals from his left and right foot before the break and then a header after the restart.
It was his first goals for the Blues in his tenth appearance and ensured a seventh straight win for Chelsea in all competitions that takes them level on points with Leicester in fourth place.
"I am absolutely delighted for him," said Lampard.
“There has been a lot of talk around Christian for the big price tag. He is quite rightly a star in his own country, captain of them.
“I know the back story, the pressure of big move. He played for his country in the summer and had only a one week break.
"Then you have the pressure of whether can he deal with the Premier League so I have given him minutes. Christian has been performing from the bench and deserved his start.
“It was a fantastic match-winning performance. I know what a good player he is. There are things he has to learn and improve. He has just turned 21.
“He certainly knows I am driving him daily in training. The way he has trained in the last few weeks says here I am. He showed the full package today.“When he moves the ball so quickly then he can cause teams a lot of problems. I hope it gives him confidence it should do.”
Pulisic opened the scoring midway through the opening half after pouncing on a Matthew Lowton slip to drill a low shot through a forest of legs into the corner and soon after seized on another error from James Tarkowski to net courtesy of a slight Ben Mee deflection.
The points were secured when Pulisic rose to steer a Mason Mount cross into the roof of the net but Willian made sure with a fourth from a tight angle.
Chelsea threatened to add to their lead but after Referee Michael Oliver pointed to the spot adjudging that Tarkowski had fouled sub Callum Hudson-Odoi in the box the decision was rightly overturned by VAR.
The home side, with striker Ashley Barnes guilty of wasting several chances, mounted a late rally and Jay Rodriguez and Dwight McNeill put some respectability on the scoreline halving the deficit.
Furious Clarets boss Sean Dyche branded Chelsea teenager Hudson-Odoi a "cheat" after claiming he dived for his penalty award that was eventually overturned.
He said: “We are told by the Premier League that the worst you can get for that is a yellow card.
“So you are allowed to cheat. It is shambolic you can dive all over the place.
“I keep seeing that word ‘Respect’ but you should respect the game and respect behaviour."
By Russell Stoddart
Image: Getty Images