The Aussie stopper made a terrible mistake to let Kevin Davies' shot slip through his fingers and let Bolton back into the final at 2-1.
But he recovered to make two magnificent saves as the Teesiders clinched their first-ever trophy.
Our goalkeeping coach Hans, a big fan of Schwarzer, said: "For me, the Carling Cup final summed up Mark.
"He made a mistake but his strength is that he forgot about it and made two crucial saves after that to make sure they won the cup.
"It's what you expect from a Premier League goalkeeper because they are at the top of their game.
"A lot of goalkeepers get tested when they are in a situation like that, they make a mistake and it's how they react.
"You expect them to react positively and that's not always easy. You can see that from goalkeepers in the lower divisions and youngsters who find it hard and will do silly things to try and compensate for the mistake.
"Consistency is the key factor as far as Mark is concerned. He's a good kicker, will come for crosses and his shot stopping, as is the case with every keeper in the Premier League, has to be good."
Hans Segers says you need look no further than Middlesbrough's Carling Cup triumph to highlight the qualities of goalkeeper Mark Schwarzer.