A second half Nicolas Jackson goal gifted Chelsea a place in the forth round as well as their first win against Brighton in more than three years.
Both clubs fielded strong sides, with Roberto De Zerbi making seven changes to his starting-11, and Brighton’s best chance came in the second half when their former shot-stopper Robert Sanchez blocked Solly March’s header.
Here is how we scored the Brighton players...
13. Danny Welbeck: 6
Did nothing of note after coming on. Photo: (Photo by Harriet Lander/Getty Images)
14. Billy Gilmour: 6
He looked to get things ticking in the middle of the pitch for Brighton but couldn't change their fortunes. Photo: (Photo by Mike Hewitt/Getty Images)
15. Jack Hinshelwood: 6
He looked a bit weak at times, but you can't hold that against a young player who is still finding his feet at the professional level. Photo: (Photo by Adam Hunger/Getty Images)
16. Adam Lallana: 6
He did nothing of note after coming on. Photo: (Photo by Michael Regan/Getty Images)