Warren Gatland says that Wales' medical team are confident Cory Hill will be "up and training" for a pivotal World Cup clash against Australia.

The Dragons lock is suffering from a stress fracture in his leg and has not played since February, but Gatland has named him in a 31-man World Cup squad.

"Prav (Welsh Rugby Union national medical manager Prav Mathema) and the physio spoke to somebody from the (Welsh) FA. One of their players had a more clean break, and they got him back playing in 30 days," Gatland said.

Wales midfielder Joe Ledley suffered a minor fracture of his leg playing for Crystal Palace against Stoke in May 2016, and 35 days later featured as a second-half substitute in his country's opening game of Euro 2016 against Slovakia.

"It's about the fact that he has taken part in every training session and we have seen some huge improvement, so that if called upon he can do a job for us.

"He (Carre) is going to make mistakes, but if a guy comes in at 138kg and is really struggling, and by the end of Turkey (Wales' training camp last month) he is beating the other props in terms of fitness, then you have to take your hat off to him.

"He's got some engine on him, he is explosive when he carries the ball, and I thought he was good in that area yesterday.

"The thing I've found frustrating in this role over the years is the pressure the (Welsh) regional coaches have been under to get results and performances.

"That's often meant youngsters haven't been given opportunities, and that's been hard. The thing when you pick a youngster is you know you are going to go through some pain.

"You need to see the long-term development, and often we haven't seen that in Wales because of results. That's something we need to address and be aware of."