Kai Havertz's hat-trick in Chelsea's Carabao Cup thrashing of Barnsley will be the "first of many great nights" for him, says Blues boss Frank Lampard.
It was the 21-year-old Germany international's first goals for the club after arriving from Bayer Leverkusen for £71m earlier this month.
Tammy Abraham put the Blues ahead and had a role in all of Havertz's goals.
Ross Barkley and Olivier Giroud were also on target as the hosts eased into the fourth round at Stamford Bridge.
"I'm delighted with Kai," said Lampard.
"It was everything I wanted the night to be for him.