Chelsea boss Frank Lampard defended Raheem Sterling and Hakim Ziyech after victory at Bournemouth.
The pair were late substitutes for the 3-1 win and were booed by away fans at the end.
Lampard said: "Our fans were fantastic today, so I personally appreciate their support. We had a moment at that end of the pitch where everyone feels good for a day, I think that's important for the players and the fans. In terms of the subs themselves, I think all of the subs we made had an impact.
"In terms of Ruben and Raheem coming on a bit earlier, I think Ruben gave us a bit of physical presence and calmness on the ball and Raheem, as you say, was involved in the goal. Azpi came on and gave us leadership. Hakim came on and gave us an assist and played really well. I think the opinion can always change in a period.
"They're two players Hakim and Raheem that want to do well as football players and they have big talent both of them. If it's form, it's very much temporary and I think their class is permanent and I'm pleased for them today having an impact when they came on."