Australian spinner Michael Beer has hinted at having doubts about his selection for the third Ashes Test but is still relishing the challenge of facing England.
The 26-year-old left-armer was a surprise inclusion for this week's third Test in Perth, where he now plies his trade in state cricket.
Beer has made just five appearances for Western Australia having been third in line for a place in the Victoria side just 12 months ago.
He only made his first-class debut as recently as October and, having taken a modest 16 first-class wickets at 39 runs apiece so far, acknowledged that the week ahead was a step into the unknown.
"That is a hard one," Beer said when asked if he was ready for Thursday's game.
"I am looking forward to the challenge and hopefully... I am confident in my own ability in a contest and hopefully that comes out shining.
"I love a challenge and I am just running off that.
"I think it is just knowing my role and executing it as best I can."
Speaking after his first training session for Australia on Monday, Beer said he was a much better bowler than just a few months ago.
"I am (better) at a number of things, from on the field, the way I bowl, to my professionalism off the field," he said.
"There are a number of things I have worked on and I hope to keep improving."
Something in Beer's favour is fact that he has already played against Andrew Strauss' side in their opening tour match.
On that occasion, he returned match figures of 5-207 from 40.4 overs at worse than five runs per over.
"I think it will definitely help, being in the same surroundings and I'll take a fair bit out of that contest I had with them," Beer said.
"I enjoyed that and learnt from it."
At least a couple of Beer's wickets came when England went chasing quick runs in the three-day match, which the tourists won outright.
Beer's selection makes him the 10th specialist spinner to be tried since the retirement of Shane Warne four years ago.
It was Warne, who has himself been backed to make a shock comeback in the wake of Australia's innings defeat in Adelaide, who suggested that selectors look at Beer.