So she was as expert at this formality as she has proven expert in tennis itself over her remarkable career.
He wrote: "Days after our baby girl was born, I kissed my wife goodbye before surgery and neither of us knew if she would be coming back".
'Well, she's an incredible person, Angelique is, ' she added.
Urged on by husband Alexis Ohanian and her celebrity supporters, Williams upped her aggression and noise level, almost taking out her opponent with a thunderous drive volley in the third game of the second set.
Williams' was obviously upset as she spoke to the result.
"I'd just like to tell all the moms, I had such a long struggle to come back and it was really hard", Williams explained in her post-match interview.
I had to have multiple surgeries and nearly didn't make it, to be honest. "For all you mums out there I was playing for you".
It also stopped her joining Court, Evonne Goolagong and Kim Clijsters as the only mothers to win Grand Slam titles in the professional era.
Few have tried doing both at once. The 11th seed knew what it took to beat Serena in a Grand Slam showpiece after winning their 2016 Australian Open final. A stung American upped her intensity to break back and level 2-2, but as the set progressed some things were beginning to become clear.
Serena Williams is projected to rise from 181 to 28 in the WTA rankings. Ousted in the second round of Wimbledon's singles event, Azarenka will compete for the mixed-doubles title, paired with Jamie Murray of Scotland on Sunday.
May's Brexit plan 'will probably kill' U.S. trade deal
The people vote to break it up so I would imagine that's what they'd do. He added: "We have enough difficulty with the European Union ".
"When you've reached the top players have nothing to lose when they play against you", she said. "I was really happy to get this far". "Serena is showing you can do it".
Williams is a seven-time Wimbledon champion and her 23 major trophies rank second all-time to Margaret Court.
Kerber's clever ball-placement kept extending the rallies and the rustiness in the Williams game was apparent as she smacked the net with a backhand on set point.
Golf legend, Tiger Woods, Racing driver Lewis Hamilton and fashion maven Anna Wintour were also in Williams' box for championship day.
Before the women's final, Novak Djokovic and Rafael Nadal will take to Centre Court to resume their semifinal that was suspended Friday night after the third set.
Kerber broke Williams' serve to open the match - a rare and startling achievement. That was part of a run in which she dropped 8 of 9 points.
Strong, fit and determined, Kerber wasn't rattled by Williams' powerful groundstrokes.
When asked if the delayed start to the women's final had any impact on hr preparations, she pointed out that throughout the whole tournament, she had never had a first match on start time. She wore special compression leggings as a precaution during Wimbledon, just the fourth tournament of her comeback. Serena already owns the record for most titles won during the Open Era. And, for this, Serena should blame herself: she didn't look like a woman, who's returned after surviving a life-threatening surgery; she was once again the superwoman, who'd won six of her previous 10 Grand Slams before announcing her pregnancy.
"I think without 2017 I couldn't win this tournament", Kerber, who will rise back to world number four, told reporters.