In just his second senior international appearance, the 19-year-old met a left-wing cross with a clinical downward header at the far post to hand his country back-to-back 1-0 victories in League B Group 4.
“To be honest, I can’t really sum it up at the minute,” Williams told Sky Sports post-match. “Before the goal, we must have made about 25 passes before the goal actually went in, so the build-up to it was the main thing.
“And to finish it off, and especially to get my first goal for my country, is just a proud moment for me and my family. It’ll be a day I’ll remember for the rest of my life.”
Williams had been introduced as a 65th-minute substitute in Cardiff for his home Wales debut, having made his first ever appearance at Finland on Thursday night.
“It’s just happened too quick, to be honest!” the defender, who signed a new long-term Reds contract last month, reflected with a smile.
“Making my debut, then scoring my first goal for my country… obviously when you’re a kid, you always dream of playing for your country. To get the opportunity and to do what I’m doing now is just a surreal moment.
“If I keep working hard and keep showing the gaffer what I can do, then hopefully I’ll keep getting my chances and hopefully like today I’ll get some more goals.”