The underfire goalkeeper managed a cleansheet for the 1-0 win.
Ten Hag said: "He really showed personality.
"He was really calm and composed. He did everything right in and out of possession and leads his back line. I thought it was a very good performance."
He added: "It's about winning. And I just thought in the last week there was a lot against us.
"But you have to turn that and it's only up to us. And we knew that and we said that to the team. The team acknowledged it and we have seen the answer on the pitch."