Luke Moore, Marlon Harewood and Nigel Reo-Coker also scored as the Premier League side never looked liked suffering an upset.

O'Neill said: "Shaun kept going from where he left off scoring on Saturday against Fulham.

"His first goal was superb and his second wasn't bad and it set us on our way.

"Shaun is very hard on himself which is possibly a nice trait to have. I know what he's capable of doing and that was an example.

"I'm hoping he settles down because he's got that talent.

"I always worry about matches when we are expected to win. These games are always a potential banana skin and I didn't want to become another statistic."

Wrexham boss Brian Carey rued his side's inability to make the most of a bright start and said they would learn lessons from the defeat in their League Two campaign.

Carey said: "The manner in which we conceded the goals is something we won't do again, I'll make sure of that because I am really disappointed for everyone that turned up.

"We did so well for a period in the game and I think we showed them too much respect. If you let a Premiership player do what he wants you pay dearly for it.

"We did well down the left through Eifion Williams but the goals were sickening really. We changed it around to try to get back into it and it backfired."