Dundee United manager Peter Houston praised his side for a professional performance as they swept past Stranraer 5-0.
The front pairing of Johnny Russell and Jon Daly shared the goals in the William Hill Scottish Cup tie.
"We could have scored a lot more," the boss said. "Their goalkeeper won the sponsors' man of the match and the boy did quite well.
"Their defenders did as well as they could but they are playing against Russell who is sharp and Daly who is experienced and a handful."
Russell's hat-trick took him on to 11 goals for the season as United look to recapture the cup they won in 2010. The manager was keen to keep the striker at Tannadice for another year "at least".
He said: "There are bits of his game when he plays against better opposition that he is still to learn. I've said it about David Goodwillie at one time and when it was time for him to go I was saying it was time for him to move on.
"I think Johnny is playing every week and if he went down to a Premiership team he would not be playing every week. I look at some players who go down and don't play - in fact we've got about 10 ex-players that are not playing just now since the cup final."
It was Russell who opened the scoring in the opening quarter of an hour, which set the tone for the rest of the game.
Houston had stressed to his players beforehand he did not want a cup shock, and he added: "I thought we started in the right manner. None more so than Willo Flood getting a grip of the game along with John Rankin in the middle of the park.
"Then, Johnny Russell is a talent and you saw that again. He is sharp round about the box and it is five goals for the strikers, which is pleasing."