She hadn't dipped her toe in Grand Slam waters since NY, where everything devolved after Williams was warned for getting coaching, then docked a point for breaking a racket and eventually docked a game for calling the chair umpire "a thief" during the final.
"It's a Serena-tard", the 37-year-old later told a news conference to laughter, adding that she thought it "an incredibly strong, powerful statement for moms that are trying to get back and get fit".
"I kind of like to jump in the deep end and swim", Williams said in an on-court interview after the 49-minute workout, "and see what happens".
Thanks to recent results, the former No. 1-ranked player is now 36th; the last time she appeared at a major without the benefit of a seeding was the 2014 Australian Open.
But in an emotional ending the 31-year-old three-time Grand Slam champion indicated that he may make a comeback after an operation on his troublesome hip. Suddenly - aside from questions about her daughter Olympia's Instagram-famous doll, Qai Qai - it was 2017 all over again, with Williams the odds-on favorite to win this tournament.
But there was the characteristic response, Murray showcasing his talent with some remarkable early returns and producing a series of brilliant shots during two tie-break wins that thrilled those watching on. Many do not even have a creche where children can be cared for while their mothers train or play, according to a report by The Telegraph.
"I think it's because I know he's leaving because of injuries not because he doesn't wanna play this attractive sport anymore". But I feel like I should have done better, you know, I could have done things differently.
She lost in the second round at Wimbledon and the US Open, which ultimately led to her dropping her No. 2 seed to Angelique Kerber despite her winning her first career major at last year's Australian Open. I can't walk properly at all just now.
"I'm in actual tears Andy Murray has the most incredible spirit and heart and there is no one else like him in tennis", another said.
Williams didn't defend her title previous year while she was taking time off following the birth of her daughter.
"But I'm aware that that probably isn't going to happen now".
"It was a real marathon", said Williams, who faces Alize Cornet in the second round. Then, in the fourth set, he repeated the process again, taking it into a tiebreak and winning.