The Senegal international struck with his first goal since January 4 and just his second of the season in the Barclays Premier League when he dispatched substitute Hatem Ben Arfa's 94th-minute cross in front of owner Mike Ashley.
Carver, deputising for the banned Alan Pardew at the post-match press conference, said: "When Hatem came inside, I thought he was going to shoot, but he had the sense to stick it on Papiss' head and he probably took the hardest chance, because it came quickly.
"Of all the chances he had today, he guided it past the goalkeeper, and there's nobody more pleased for him than me.
"Last week, we didn't create a great deal, but the two chances fell to Papiss. I said after the game last week how hard he does work on the training ground to put that right, and he certainly did that today.
"He's not going missing, he's not hiding and sometimes you can when you are lacking in confidence."
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