We will know tomorrow whether Andy will be fit or not to play in the tie:

GB Davis Cup captain Jeremy Bates, speaking in Glasgow today, said: "We are just waiting on the results from the tests, I've been told will get the results on Wednesday morning.

"He hasn't played so I couldn't tell you if the ankle is fine. He has been in bed since Sunday morning, although he is not in bed any longer, but he hasn't played on his ankle.

"At this moment it is more about his health as opposed to the ankle.

"I can change the team up to an hour before Thursday's draw. But I don't want the opposition knowing what players we have and haven't got."

If Murray cannot make it there will be no recall for former British number one Tim Henman.

Bates added: "I've had plenty of chats with Tim about the Davis Cup and he has stated his feelings on it and I respect that."

Murray has risen from 400th in the world to 41st in the past 12 months and recently won his first ATP tournament event in San Jose, California and Bates predicts his star will continue to rise.

He said: "A year ago he was 400th and now he's 41st. That's been a meteoric rise by anyone's standards.

"He has made his breakthrough and established himself in the top 50 but in terms of where he can be is he can be one of the best players in the world.

"Things are going very quickly and he deserves everyone's support, as that could make the difference."

The event, staged over three days at Braehead, is already a sell-out and Bates is looking forward to his team playing their first home match in four years on Scottish soil.

He said: "The whole arena is always how I envisaged Davis Cup being. Very intimate and steep sides with the people very close to the courts.

"The tickets sold out in abut two hours which says a lot.

"We haven't played at home since 2002, so to play at home is a boost. To play in front of 4,000 fans who are on our side is very special."