Wing Liam Williams said he had to "fight back the tears" on his 50th Wales cap before scoring two tries in the record 74-24 win over Tonga.
Williams produced a brilliant diving effort in the first half and completed Saturday's 10-try rout in Cardiff.
"It was emotional," said Williams, 27. "When Dan Biggar said congratulations as I ran out for the anthems, I had to fight back the tears.
"It's a great honour and something I'm very proud of."
He added: "Once I started singing the national anthem I was able to put it behind me and focus on the game.
"We started well and let them back into it. As a team we could have done more but overall to win my 50th cap and score two tries made it a superb afternoon."
Williams touched down in the corner to put Wales 19-3 up in the 11th minute at the Principality Stadium.
"I just tried to stay in the air for as long as possible because if that's the case and you're out of touch, the ball is still in play," he said.
"I put my body in the air, reached down, and stuck it out. It wasn't a bad try! I'm happy with that one and it's another five points on the board."
Wales, who beat Scotland and Australia in their first two autumn internationals, face South Africa on 24 November hoping to complete a clean sweep.
"A fourth win would be amazing," said Williams.
"It's three from three now, which is superb, and whoever is picked next week will look to go out there and make it four from four."