Chelsea manager Frank Lampard has defended his continued omission of Christian Pulisic.
Sunday's 2-1 loss to Liverpool was the third straight game where the American was unused substitute.
And Lampard has denied reports Pulisic is struggling to settle in at the club.
"I have a squad to pick from, he played before that in a few games," Lampard said of Pulisic.
"Willian has come back and looked sharp and good. I decided to go with Mason today. We needed to stay strong and play Mason high up the pitch. That's my choices to make.
"[Pulisic] will get ample opportunities. He is a young player as well. Everyone talks about Mason, Tammy [Abraham] and Fikayo [Tomori] but he is young and younger than some of them so his chances will come.
"It is not the case [that he hasn't settled in].
"There's Pedro, Ross Barkley and [Michy] Batshuayi on the bench.
"[Batshuayi] deserves more minutes from the way he is training, those are unfortunate choices I have to make."

