Liverpool lost 2-0 at Burnley.
Hull City defeated Swansea City 2-0 at the Liberty Stadium.
Daniel Pudil and Jack Hunt did not impress v Leeds.
Stoke City lost 4-1 to Pep Guardiola's Manchester City.
The defender failed to make a single league appearance in a year at Chelsea before moving to the Stadium of Light this summer.
The Northern Ireland winger was not injured for the game.
The Blues are currently without a right-back after Seamus Coleman picked up an injury.
Derby County host Aston Villa in the Championship this evening.
The striker completed a move from Liverpool on Saturday.
Aston Villa have a number of quality attacking players.