Andy Murray and his brother Jamie claimed a thrilling five-set victory over Lleyton Hewitt and Sam Groth as Great Britain took a 2-1 lead over Australia in their David Cup semi-final.
The Scottish brothers completed a 4-6 6-3 6-4 6-7 (6-8) 6-4 victory after a titanic four-hour struggle in Glasgow.
Now it is up to younger brother Andy, who can clinch the tie by beating Bernard Tomic in Sunday's opening reverse singles match.
The brothers had done superbly to hit back from losing the first set by taking the next two, but the Australians hit back in the fourth, sneaking it in a tie-break to force a deciding set.
The home side snatched an early break to take a 3-0 lead, but Hewitt and Groth hit back to level it at 3-3.
Serving to stay in the match at 4-5, however, the Australians offered up a break point which was snatched immediately as the British duo sealed the victory.
"It was an incredible match, to come back from the disappointment of losing the fourth set," said Andy Murray.
"We kept creating chances, we stuck together like brothers should and managed to come up with enough good returns. We had to keep the energy up at the beginning of the fifth set – it was important for us to get a good start."