Avram Grant admitted he had been impressed by the former Manchester City player's contribution.
"Shaun was good, he played well today," the Blues boss said. "We have a very big squad so any player who is in our squad, even if he is not on the bench one day, we will need him later. Shaun did that for me today.
"That is why he is in the squad of Chelsea, the same as everybody else in the squad.
"But he played well and I am pleased."
Wigan boss Chris Hutchings was magnanimous in defeat, refusing to hide behind a pair of albeit unlikely penalties not awarded to his side.
He also refused to suggest Wright-Phillips had taken the ball out of play as he threw himself into touch in the build-up to Belletti's wonderful individual effort.
On the penalty appeals, he said: "Andreas Granqvist just tried to stand his ground and let (Didier) Drogba barge into him.
"I don't have an issue with that.
"With (Marcus) Bent and (Ricardo) Carvalho, it was just a coming together.
"I have no real argument with either of the decisions.
"I certainly don't think they were definite penalties."
As for the decision not to award a throw-in against Wright-Phillips - and some officials could easily have done so - he added: "I didn't think it was out to be fair. My first reaction was that he had just about kept it in.
"I thought it was a right borderline decision. But if it had been clear-cut I would have said."