This year, she's won multiple Grand Slams and climbed her way to the absolute top of the rankings, indicating a potential replacement for Williams once she is set to retire.
Sharapova is bound to have kept abreast with what happened at the season's final Grand Slam, which was won on Saturday night by Angelique Kerber in her latest chapter of Tales of the Unexpected. "Thank you so much for the whole support, you're just unbelievable".
But what made it sweeter was Kerber became the first German to become world No. 1 since Steffi Graf in 1997.
Never a Grand Slam finalist before 2016, the German beat Williams for the Australian Open title in January, then lost to her in the Wimbledon final in July. "I know how to deal with the pressure and the things I have to do off-court".
Five years on from that breakthrough run in New York, Kerber will leave the city as a two-time Grand Slam champion, and the new world number one, having accrued enough points to overtake Serena Williams at the summit of the rankings.
"I knew that I have the game to beat the best players and now to see that the work pays off, this is actually the best feeling". "I mean, all the dreams came true this year, and I'm just trying to enjoy every moment on court and also off court".
"I heard from her yesterday or like two days ago", said Kerber.
The 28-year-old became the oldest player to reach the top of the rankings for the first time after Serena Williams was beaten in the semi-finals at Flushing Meadows by Karolina Pliskova.
Without Serena in the final, there were some no-shows and some tickets on the secondary ticket market were going for under $40. Though both Kerber and Pliskova took their game to the next level in the final set, it was the second seed, who clinched the final two games of the set to win the US Open.
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Kerber spent two weeks at Flushing Meadows listening to - and trying to block out - questions about another opportunity to overtake Williams for the top spot.
A potential turning put did arrive soon after, though, as Pliskova was able to secure an important break at 4-3 before holding on her service game and eventually pushing through to leave the game heading into a decisive third set.
We have to wait and watch how Kerber goes about her business. "It's an incredible court".
Faced with the challenge, Kerber admitted she was "a little negative" in the second set.
The second set remained on serve for the first 3 games. The runner-up, who lost the final eight points of the match, said nerves had no impact on her at any stage during the final.
It was a great match tonight, Pliskova said.
Pliskova said she felt no sadness in defeat. She deserve to be No. 1.
"It was just the next step to beat the best players", she said. "For me, it's really important to go on my own way and to have her in Germany with all the things she did for tennis, it's just fantastic", she added.