Chelsea debutant Welbeck downs Luton as Enzo Fernandez left out

The 35-year-old summer signing from Brighton headed home from close range early in the first half, before Hakeem Odoffin later diverted an attempted clearance from Estevao Willian's shot into his own net.

Before half-time, Estevao dragged a good opportunity wide from inside the penalty area, while club-record signing Morgan Rogers volleyed against the crossbar on his home debut.

On the pitch, Chelsea dominated much of the first half, but inspired Luton goalkeeper Josh Keeley produced a series of excellent saves, beginning with a double stop to deny Cole Palmer in the 11th minute.