Tammy Abraham struck a smart Stamford Bridge hat-trick as Chelsea drove past stubborn Luton with a 3-1 win and into the FA Cup fifth round.
England hitman Abraham took his Chelsea goal tally to 11 for the season, netting twice in seven first-half minutes before completing his treble late on.
Jordan Clark profited from the struggling Kepa Arrizabalaga's latest error to claw one back for Championship side Luton, but the Blues ground their way to an important fourth-round win.
Timo Werner missed a late penalty in a frustrating end to his afternoon, but Chelsea will now travel to Barnsley in the fifth round.
This victory was crucial for under-pressure boss Frank Lampard, who will now set about trying to engineer a return to winning ways in the Premier League.
"It's great to score a hat-trick and win so comfortably. Luton are a good side," England forward Abraham said.
"It's always nice to get a win, hopefully we can build off that form now ... hopefully we can build on the confidence from here."
COMPANY%20PROFILE
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TWISTERS
Director: Lee Isaac Chung
Starring: Glen Powell, Daisy Edgar-Jones, Anthony Ramos
Rating: 2.5/5
Company profile
Name: Infinite8
Based: Dubai
Launch year: 2017
Number of employees: 90
Sector: Online gaming industry
Funding: $1.2m from a UAE angel investor
FROM%20THE%20ASHES
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BRIEF SCORES
England 353 and 313-8 dec
(B Stokes 112, A Cook 88; M Morkel 3-70, K Rabada 3-85)
(J Bairstow 63, T Westley 59, J Root 50; K Maharaj 3-50)
South Africa 175 and 252
(T Bavuma 52; T Roland-Jones 5-57, J Anderson 3-25)
(D Elgar 136; M Ali 4-45, T Roland-Jones 3-72)
Result: England won by 239 runs
England lead four-match series 2-1
GAC GS8 Specs
Engine: 2.0-litre 4cyl turbo
Power: 248hp at 5,200rpm
Torque: 400Nm at 1,750-4,000rpm
Transmission: 8-speed auto
Fuel consumption: 9.1L/100km
On sale: Now
Price: From Dh149,900