Stoke City would have themselves to blame not to have responded equalized as they had many glorious chances which would have resulted to goals for them.
Costa, a key figure in Chelsea's two Premier League title wins in last three seasons, appeared to have sealed his inevitable exit from Chelsea after they agreed to sell the 28-year-old back to Atletico Madrid.
Hazard had made just three appearances off the bench for the Blues this season after breaking his ankle at the end of last term.
Don't forget in his previous experiences with Juventus and Real Madrid: he played but not in every game, not regularly.
"I think for Alvaro it's the right moment to have this situation, to be the striker in a great team", Conte said.
Antonio Conte believes that now is "the right time" for Alvaro Morata to assume the responsibility of being the first-choice striker at a top club, and joked that the Spain global is the kind of man he would one day like his daughter to marry. For a striker, that's important.
Replacing Diego Costa shouldn't have been so easy but Alvaro Morata has already consigned Chelsea's former hero to history. Saturday's hat-trick crowned an impressive all-round performance in which Morata held the ball up well, showed excellent control and took his goals clinically.
Chelsea go into the match hoping to close the three point gap between them in third place and the Manchester clubs in the top two spots.
"It's fair to say we are struggling in defensive positions, which is hugely frustrating", Hughes revealed during his press conference on Friday.
For Stoke boss Mark Hughes, the concerns are two-fold ahead of Saturday's game. 'We know we have the quality on the ball because we have top players but against them it's not enough to just be effective in possession, you have to fight.