Chelsea new boy Kai Havertz scored his first hat-trick for the Blues as they beat Barnsley 6-0 and sealed their progression into the fourth round of the EFL Cup.
Since joining Chelsea from Bayer Leverkusen, Havertz had struggled in the two games he has played for the Blues, but on Wednesday, he find his feet.
Tammy Abraham gave the Blues the lead in the 19th minute, nine minute later Havertz double the lead and end the first-half
2-0 in favour of Chelsea.
Chelsea continue from were they stopped in the first-half, four minute into the second half, Ross Barkley makes it 3-0 for the Blues.
Havertz completed his hat-trick when he scored in the 55th and 65th minutes respectively with assist from Tammy Abraham.
Olivier Giroud scored in the 83rd minute to make it 6-0 and wrapped it up for Chelsea.
Chelsea will face West Brom in the Premier League on Saturday, while Barnsley will play Coventry City in the Championship.