Seven-time champions Australia seized control of their Billie Jean King Cup qualifier against Mexico on Friday despite losing Storm Hunter on the eve of the tie to a serious Achilles injury.
Samantha Stosur, in her first match as captain, picked Hunter as her No 2 singles player, but she suffered a ruptured tendon during a practice session ahead of the clash in Brisbane.
"I am devastated and heartbroken," said Hunter, the world's No 3 doubles player, who will now almost certainly miss the Paris Olympics this summer.
Daria Saville stepped in and blew Marcela Zacarias off court 6-1, 6-0 in under an hour to put Australia within reach of the season-ending finals in Seville.
On fire 🔥🔥
— Billie Jean King Cup (@BJKCup) April 12, 2024
Daria Saville wraps up her match in 51 minutes!⏱️#BJKCup | @Daria_gav | @TennisAustralia pic.twitter.com/oPfn6B8yVz
"I thought I played pretty well," said Saville, who recently moved back into the world's top 100. "I was determined and clearly that showed, so very happy.
"Yesterday was a pretty tough day for all of us, emotional, and it was so nice to have Stormy here supporting us," she added of Hunter, who was sitting courtside with her leg propped up.
In the first singles rubber against an understrength Mexico, Arina Rodionova opened her first BJK Cup tie in eight years with a battling 3-6, 6-3, 6-1 win over Giuliana Olmos.
Rodionova struggled to get going but finally hit her stride to win nine of the last 10 games and emphatically put the hosts on the front foot.
"I just tried to do my best to stay in the match and hope I got my chance somewhere," said Rodionova.
"I'm just happy I could help out the team. It's so special playing for your country."
Mexico are without their three highest-ranked singles players, including world number 100 Renata Zarazua, and face an uphill task in the reverse singles on Saturday.