Trafford made two key saves to help City into the next round.
He said afterwards: “I knew I wasn’t going to have too much to do but, when I was called upon, I had to do well.
“It was nice, it wasn’t what I expected coming into the season. I tried to guard against it. It’s the reality and I have to give it my best shot. It’s the situation I’m in. We train every day but making saves, it’s good fun.
“It’s one of them, it’s a knockout competition. We won and we have a week until the next game. We have to keep going.”
Trafford added: “We had to work really hard. They did really well. They defended really well and they had belief that grew through the game.
“We got there in the end and got the good win.”
