Emma Raducanu made a winning return at the Auckland Classic in her first match after eight months out with injury.
Raducanu led 5-2 before twice failing to serve out the match and missing two match points on Ruse's serve.
But the 21-year-old broke again for a 6-5 lead and eventually closed out the match on her fourth match point.
After the final point the 2021 US Open champion, who needed a wildcard to enter the tournament having dropped to 301 in the rankings, covered her face with her hand in a celebration mixed with pleasure and relief.