– There are moments in which nothing at all seems different about Serena Williams, moments such as when she unleashed a 109 mph service winner to even her Wimbledon quarterfinal at a set apiece, leaned forward and yelled, loudly as can be, "Cooome ooon!"

Or when, about 10 minutes later, she stretched for a lunging backhand winner to break at love and take control of the third set, then raised a fist, figuring a berth in her 11th semifinal at the All England Club was close at hand.

And after Williams came up with a comeback to beat 52nd-ranked Camila Giorgi of Italy 3-6, 6-3, 6-4 on Tuesday, she headed off Centre Court with her right index finger aloft. Yes, no matter what the rankings or seedings say, no matter how long she was away, Williams still looks capable of playing like someone who's No. 1, just about 10 months after having a baby.

"Everything right now is a little bit of a surprise. To be here. To be in the semifinals. I mean, I always say I plan on it, I would like to be there, have these goals," Williams said. "But when it actually happens, it still is, like, 'Wow, this is really happening.' "

So what if she's still getting her game in gear?

So what if Giorgi wouldn't seem to miss while moving out to that early lead?

Williams never was worried about losing.

"It's weird. Sometimes I feel, 'Man, I'm in trouble.' Sometimes I feel, 'I can fight.' For whatever reason, today I was so calm," said 36-year-old American, who has been wearing compression leggings as a precaution after a blood-clot scare following her daughter's birth. "Even when I was down the first set, I thought, 'Well, she's playing great. I'm doing a lot of the right things.' "

Next up for Williams as she tries to earn her eighth title at the All England Club and 24th Grand Slam trophy overall will be a match Thursday against No. 13 seed Julia Goerges of Germany, a 3-6, 7-5, 6-1 winner against No. 20 Kiki Bertens.

"It's pretty unreal for me," said Goerges, who reached her first major semifinal at a tournament where she exited in the first round each of the past five years.

The other semifinal is No. 11 seed Angelique Kerber of Germany vs. No. 12 Jelena Ostapenko of Latvia.

Kerber needed seven match points to close out No. 14 Daria Kasatkina of Russia 6-3, 7-5 while Ostapenko defeated 2014 Australian Open runner-up Dominika Cibulkova of Slovakia 7-5, 6-4.

In the men's tournament, Roger Federer advanced to a record-extending 16th Wimbledon quarterfinal with a 6-0, 7-5, 6-4 victory over Adrian Mannarino.

Federer next faces eighth-seeded Kevin Anderson of South Africa, who reached his first Wimbledon quarterfinal after edging Gael Monfils 7-6 (4), 7-6 (2), 5-7, 7-6 (4). Top-ranked Rafael Nadal is also back in the quarterfinals for the first time since 2011. He beat Jiri Vesely 6-3, 6-3, 6-4.

Ninth-seeded Amerian John Isner, No. 13 Milos Raonic of Canada and No. 24 Kei Nishikori of Japan also advanced.