Chelsea scored all their goals in the second half at Stamford Bridge, where Preston North End were beaten 4-0 in the FA Cup third round tie.
Here are our player ratings from the cup contest.
5. Brad Potts - 5.5
Put in a top first half shift, then clearly fatigued in the second and Chelsea had some joy down the left. | CameraSport - Andrew Kearns
6. Ben Whiteman - 8
Had a really good game, despite the result. Was disciplined in his work and switched on tactically. Some superb last ditch moments in the defensive third. | CameraSport - Andrew Kearns
7. Ali McCann - 7
A difficult final 20 minutes or so, after his off-the-ball work had been excellent. Brought bite to the midfield and won his tackles in there. | CameraSport - Andrew Kearns
8. Liam Millar - 6
Did the other side of the game well first half, making some vital tackles on Sterling. Had a few opportunities to go at Gilchrist but the youngster equipped himself well. | Getty Images