Trafford was called up ahead of outright senior No1 Gigio Donnarumma.
He said after the 2-0 win:"Yeah it was obviously big saves because they happened quite early on in the game, but I can’t really remember them because they were quite quick, but yeah, I’m just happy to play my part in it, and then Nico (O'Reilly) scored two, which is brilliant from him.
"This moment, means a lot to me. Four or five years ago when they beat Spurs to win it, I think I was fourth or fifth choice, and I always imagined that I would win it one day. It’s an incredibly good season, because all my family and friends are here, and it’s a long way from north-west Cumbria."
On starting the final, he continued: "Yeah, it means a lot to have his faith, and it’s a testament to how I believed in myself, and how I acted in training, when I’ve been brought in for club games. Every time that I play I just give it my best shot."
On competing with Donnarumma, he added: "No illusions, it hasn’t been easy at all. It’s been really tough at times, but I have a really good set of people around me. My teammates and my coaches have been brilliant. They have kept me going, and given me individual goals. It’s down to them."