Great Britain's Dominic Inglot and Jamie Murray are scheduled to take on Australian pair Sam Groth and Lleyton Hewitt in the third round of Davis Cup semi-final.
Where to watch
Live coverage of the third round match between Great Britain and Australia is available live on BBC One from 1pm (BST). A live stream is also available through the BBC Sport website.
While Inglot and Jamie Murray are scheduled to renew their partnership as part of Great Britain's quest for their first Davis Cup title since 1936, team captain Leon Smith can still opt to include Andy Murray in the doubles match if he is not happy with how things ended after the first two rounds of action on Friday.
Smith took a similar approach in Great Britain's quarter final victory over France in July after James Ward lost his second round match. Smith then opted to bring Andy in to pair with older brother Jamie, with the former eventually featuring in all in all three rubbers that weekend, winning his final match against Gilles Simon at the point close to exhaustion.
Teams have until an hour before the start of their match to finalise their pairs, meaning we are looking at a final deadline of around 12pm (BST). But Smith is hopeful Jamie Murray and Inglot, no. 8 and no. 26 respectively in the doubles rankings, can get the job done.
"In Jamie Murray and Dom Inglot I have two world-class doubles players who are extremely confident," said Smith. "You can't be sure that Andy can play all three days, it's a big ask for him, so I want to have those options for doubles."
Australia captain Wally Masur has made it clear this week that Hewitt and Groth will be his first-choice options for the doubles, despite the former has spending his days in the build-up to Saturday's match exchanging barbs with Andy Murray. But if he needs any more incentives to topple Great Britain, the trip to Glasgow is part of the 34-year-old Hewitt's swansong, having announced his decision to retire from tennis after the 2016 Australian Open earlier this year.