The Blues beat the Royals 4-3 on afternoon in which just under 20,000 were in attendance.
Ross Barkley got Chelsea's opening goal following a stunning free-kick on the edge of the area. He whipped it over the wall, and it curled into the top left-hand corner putting Chelsea level.
Kenedy got in on the action as his long-range strike caught Royals keeper Joao Virgínia off guard as the Brazilian's strike swerved into the back of the net.
Mason Mount then put the Blues ahead after he pounced on a poor pass from Tammy Abraham, and he rifled his shot into the back of the net in front of the travelling supporters.
The 20-year-old killed the game off due to a calamitous error from the Royals' keeper. Straight to the Tammy Abraham, who guided it to Mount, who then tapped one of the easiest goals he will ever score in.