GARETH Anscombe knows from first-hand experience that he faces a daunting aerial examination when going up against Australia superstar Israel Folau on Saturday, writes Chris Kirwan.

The Cardiff Blues full-back will make his first Test start when he lines up for Wales in the World Cup, Pool A decider at Twickenham.

The 24-year-old prefers fly-half but slots in at 15 where he will lock horns again with 6ft 4ins powerhouse Folau, who he faced up to when playing Super Rugby with the Chiefs.

Anscombe, New Zealand-born to a Welsh mother, said: "I played 15 against the Waratahs once and he climbed all over me on the high balls a few times!

"We know the dangers we face, but with the back line we've got hopefully we can cause a few problems.

"Aussie sides are very smart in terms of how they play tactically, and they don't miss a beat. They like to use the ball, and they have looked pretty sharp. We will have to be on our toes defensively to not give them too many opportunities.

"It's a big game for this team. We want to finish top of the pool and stamp our authority. The team is confident, and it's a huge occasion on the weekend."

Anscombe wins his second cap after coming on as a replacement in the pre-tournament tune-up against Ireland in Cardiff.

He suffered a foot injury after that encounter so did not make Wales head coach Warren Gatland's 31-man World Cup squad.

But injuries to Scott Williams and Hallam Amos during Wales' 28-25 Pool A win against England 12 days ago resulted in him being called up.

"The injury was a tough pill to swallow, particularly after 11 weeks of hard work in Switzerland, Doha and at the Vale (in Wales)," he said.

"It's tough to think your World Cup dream is sort of snatched (away) when so close to selection. Injuries aren't the best part of sport, and we've had our fair share.

"Unfortunately for Scotty and Hallam, they took their bumps, and I guess it opened up a door for me. I am thankful to be here, and hopefully I can add to the cause, come Saturday."