Nine years ago this month, Dinara Safina partnered Nathalie Dechy to win the US Open doubles title.
The former world No. 1 has relocated to New York City.
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Safina has been spending time training at Match Point NYC in Brooklyn. Her formidable two-handed backhand looked sharp in this hitting session video she posted yesterday.
A recurring back injury forced Safina to retire in 2014.
The owner of 12 WTA singles titles looks fit, which raises the question: Is Safina training for a possible return to the Tour?
Though the 30-year-old Russian is just two years older than current No. 1 Angelique Kerber and five years younger than second-ranked Serena Williams, Safina has not said she's preparing for a playing comeback.
However, in a Twitter exchange, Safina, whose mother, Raouza Islanova, is widely regarded as one of the greatest coaches in Russian tennis history, said she would consider coaching someday.
Dinara was on hand when older brother Marat was inducted into the International Tennis Hall of Fame in Newport last July.
The siblings hold a record that may well never be broken: They are the only brother-sister tandem in history to attain the world No. 1 ranking.
In their younger years, Marat and Dinara were both traveling so much they barely spent time together. Safin spoke honestly and lovingly about how his relationship with his younger sister has grown closer since they retired.
"We didn't know each other. At some point we didn't feel like brother and sister," Safin said. "And finally I get to know her. I definitely say she has great potential. It's too bad she couldn't make Grand Slam winner, but she's a greater person. She understands tennis more than me, 10 times more, and she's a better person, for sure."
Announcing her retirement, Safina said her injury prevented her from continuing to compete on the pro circuit.
"It was coming for three years. There was no way back for my back," Safina said. "I was having so much pain in my back. It was tough because everything was hurting me.
"I miss (tennis) so much I cannot say but I miss the people who are supporting me, the fans and the people on tour."
In an interview with the WTA's David Kane in July, Safina said she was enjoying life as a New Yorker and reflected on her time as an elite player.
"I miss my fans and the crowds, that feeling you have on the court when you have a full crowd behind you and supporting you - whether you win or lose, especially when you win, that's nice," Safina said. "I miss the traveling and all of the girls on the tour; even though we were competitors, we were like a family and had a really nice group of people. I really enjoyed it."
Here's hoping she can continue her connection to the sport she loves in some capacity.