Chelsea head coach Frank Lampard promised Kai Havertz's three-goal haul against Barnsley will be the first of many impressive displays from the club's new signing.
Havertz put in some underwhelming performances in his first two Premier League appearances, but came to the fore with a hat-trick in Wednesday's 6-0 EFL Cup demolition of Championship side Barnsley at Stamford Bridge.
The Germany international star also played a part in another goal as Lampard's side made light work of Barnsley in London midweek.
Lampard has consistently urged patience with the 21-year-old, and suggested his treble showing is merely a sign of what is to come.
"I was delighted with Kai and everything of the night that I wanted from him," Lampard told a news conference.
"It was a great exercise for him, another game to see how we want to work off the ball, but also have freedom on the ball and combinations.
"It's the first of many great nights for him."
Tammy Abraham played ahead of Havertz and opened the scoring, with Ross Barkley and Olivier Giroud also getting in on the act.
In defence, Lampard handed a debut to former Paris Saint-Germain captain Thiago Silva, while Ben Chilwell came on for Havertz midway through the second half.
"It's exciting for us," Lampard said of Silva's debut, which lasted just over an hour.
"He has just had a weeks training with us. But he gave something off for us with a leader of authority. At the minute, the fact he can't speak the language doesn't matter too much."
Antonio Rudiger and Ruben Loftus-Cheek were both left out of Chelsea's squad, and Lampard acknowledged the duo could move on before the transfer window closes if it suits Chelsea.
"They weren't in the squad and that was just a choice," Lampard said. "There may be movement, but don't read too much in to them not being in the squad. It will have to be right or the club."