Andy Murray and Dan Evans will carry British hopes on the final day of the Davis Cup semi-final against Australia in Glasgow.
Victory in either of their singles ties would take Great Britain through to a first final since 1978.
This follows a thrilling and potentially pivotal five-set doubles success for Andy and older brother Jamie on Saturday, as they re-focused after missing out on match point in the fourth set tie-break to vanquish Aussies Lleyton Hewitt and Sam Groth 4-6, 6-3, 6-4, 6-7, 6-4.
Murray, the world number three, is likely to play world number 23 Bernard Tomic at 13.00 BST, while Dan Evans, all the way down at 300th in the rankings, will face talented teenager Thanasi Kokkinakis (world no.72), selected in place of the controversial Nick Kyrgios.
Belgium host Argentina in the other World Group semi-final in Brussels, with that tie poised at 2-1 in favour of the South Americans.
It was 34 years ago that Britain last made the Davis Cup semi-finals, 37 years since they reached the final, and 79 years since they lifted the trophy courtesy of dream team pairing Fred Perry and Bunny Austin in 1936.
Wins over the USA and France, plus the absence of powerhouses such as Serbia, Switzerland and Spain from the semis, have raised the prospect of a 10th title.
Australia have won the Davis Cup 28 times, with veteran Hewitt, who is set to retire after this campaign, leading the way during their most recent triumph 12 years ago.
Leon Smith’s decision to select the unpredictable Evans over the more acclaimed James Ward and Kyle Edmund was a surprise, and the biggest gamble of his five-year captaincy, but almost paid dividends on day one, with the diminutive Brummie taking Tomic to the limit.
Despite this, it is two brothers who grew up in the small Scottish cathedral Town of Dunblane that have carried GB’s hopes most recently, with Andy previously winning both of his singles and the doubles with Jamie to secure victory over France at the quarter-final stage.
An Evans victory today would be a bonus, but it is the broad shoulders of Andy Murray that will once again carry the load if Great Britain is to secure the spoils and head into a shoot-out with Belgium or Argentina for the trophy.