Katarina Zavatska (UKR) with her teammates after her match against Jessica Pegula (USA) in the second match of the USA vs Ukraine Billie Jean King Cup tie at Harrah's Cherokee Center
houghts of the war in Ukraine were front and centre during an emotional opening ceremony for the Billie Jean King Cup qualifier tie between the United States and Ukraine in the North Carolina mountains on Friday.
With 78-year-old American great King in attendance, Ukraine-born North Carolina resident Yuliia Kashirets gave an emotional rendition of the war-torn country's national anthem.
As Kashirets, who was introduced as having a brother serving in the Ukraine military, belted out the anthem, players from the Ukrainian and U.S. teams flanked King as they stood on court.
Odesa-born world number 93 Dayana Yastremska was draped in a Ukrainian flag, while a tear rolled down her team mate Katarina Zavatska's cheek.
A quarter of Ukraine's 44 million people have been driven from their homes and thousands have died since Russia began its invasion of the country in February. Russia initially described its aims in Ukraine as disarming its neighbour and defeating nationalists there. Kyiv and its Western allies say those are bogus justifications for an unprovoked war of aggression.
Elton John's 1975 hit Philadelphia Freedom, which the British musician penned in honour of Philadelphia-born King's commitment to equal rights and social justice, was also played.
The ceremony also included a moment of silence for the "people of Ukraine" after the stadium announcer said: "In this spirit we salute the courage and peace loving people of Ukraine and stand in solidarity with them as they stand so bravely in the face of unprovoked aggression."
Earlier in the week, Zavatska spoke about the difficulty of focusing on tennis as war raged back home.
"There is not one day we don't think about it," she said.
"Every day I'm calling my parents, my family, to ask if they're alive. This is the reality right now."
But the opening ceremony gave way to business as usual once play began as the United States won both singles on day one, though the first match between Yastremska and American Alison Riske could have gone either way.
It turned on a marathon 30-point first set tiebreak that stretched for some 27 minutes before Riske clinched the set, the second-longest tiebreak in the history of the Cup.
Riske closed out the match 7-6(16) 7-5.
"My first thought was when I lost the match is that I want to kill myself because every match at this kind of events, it's so emotional," Yastremska said.
"Especially now while everything that is going on in Ukraine, you extra want to win, you extra want to win for the Ukraine.
"Well, the first set, to be honest I don't even remember the score of the tiebreak."
The second rubber was more one-sided as American world number 14 Jessica Pegula beat 201st-ranked Zavatska 6-2 6-1.
The Billie Jean King Cup qualifier ties feature two singles matches on Friday followed by two on Saturday along with one doubles rubber.
The winners will seal a place in the finals in November, with the losers advancing to a playoff tie.
Belgium have already advanced to the finals after receiving a walkover over Belarus, who along with Russia are suspended from international team competitions in tennis.
Belarus is a key staging area for Russia's invasion of Ukraine.
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