"She's a good grass-court player and is going really well" Williams added.
"It is a completely new match", said Kerber, who failed to make a Grand Slam quarterfinal in 2017, won zero tournaments, fell from No. 1 to 21 and changed coaches. But it was Kerber who played the smarter game, keeping her cool, counter-punching whenever possible, and refusing to be rattled by the screaming winners that her opponent hit time and again.
"I don't think it's the right thing to do", Dominika Cibulkova told the BBC before the decision came down.
"Honestly, I'm just me".
Williams' movement is far from the best on tour but her game is so well oiled that it does not matter, her ability to control proceedings ensuring she was always perfectly placed to unleash another groundstroke.
All of the time away pushed someone who's spent more than 300 weeks ranked No 1 down the rankings - she began Wimbledon at 181st, but was seeded 25th on account of her past success - and no one could quite be sure how the American would fare over these two weeks.
"Pregnancy will not be penalized", USTA spokesman Chris Widmaier said last month.
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Well, it looks like the USTA won't have to worry about it. Earlier on Centre Court, another German, Angelique Kerber, overcame Latvia's Jelena Ostapenko 6-3, 6-3. "I remember I couldn't even walk to my mail box, so it's definitely not normal for me to be in a Wimbledon final".
However, unforced errors were her downfall and particularly costly given Williams' unerring accuracy and solid service games. "We played here in the final the last time I played here in the final". That's wildly impressive. Believe me, I know she wants to go out there and win.
Serena Williams swept aside Julia Gorges in straight sets Thursday to book her place in the 2018 Wimbledon final.
The Latvian stuck to her guns, continuing to go all out at the start of the second set, but her radar was way off and Kerber quickly opened up a 3-0 lead, with one break of serve. "I've played tennis for over 30 years, so I'm so used to [being] incredibly fit. I'm happy and proud to be back in a Grand Slam final, it's what I was working for since I was in a kid".
This year's final is the first repeat of a previous Wimbledon final since 2009, when Serena Williams faced Venus Williams for the fourth time in SW19, winning 7-6 (3), 6-2.
It took Kerber two tries to serve out the victory, getting broken to 5-2.