However, the 27th seeded Wang resisted Serena in the final set to cause the first major upset in this year's first Major.
He will face another Japanese player in the third round, as Yoshihito Nishioka eliminated No. 30 seed Daniel Evans of Great Britain 6-4, 6-3, 6-4.
Australian world number one Ashleigh Barty plays American Alison Riske. The Swiss now holds a 55.8 percent record in fifth-set matches, and if his last epic final against Novak Djokovic at Wimbledon a year ago is anything to go by, they can most certainly end in heartbreak. She will meet Ons Jabeur of Turkey in the third round. He will meet Marton Fucsovics of Hungary, a 6-4, 6-4, 6-3 victor over Jannik Sinner of Italy. In some ways I tried to prepare as good as I could for the US Open there.
"I love the support", Millman said after the loss. "If my serve is good as it was today then I've got a pretty good chance".
'I always enjoyed watching you play, you had a lot of battles.
"I prefer this much more than overcooked". I feel the support.
As impressive as Federer was in stealing victory from the jaws of defeat in front of a captivated crowd, Millman produced a stunning performance of which he can be justifiably proud.
In the biggest match so far to be decided by a first-to-10-point tie-break, Millman opened up an 8-4 lead only for Federer to win six points in a row and claim a 4-6 7-6 (2) 6-4 4-6 7-6 (8) victory.
In the 2012 edition of the French Open, Federer came up against world number nine Argentina's Juan Martin del Potro in one of the tournament's all-time classic.
It says: 'Therefore, a player may not use a ball to wipe off perspiration'. "All of a sudden you turn the whole thing around within, like, two minutes and it was so worthwhile, you know, everything that I have gone through". But in the second set, Zidansek changed the rhythm of the match by mixing in drop shots and shifting the pace, leading to uncharacteristic errors by the No. 8 seed.
Defending champion and No. 2 seed Novak Djokovic of Serbia also advanced in straight sets, finishing with nearly as many aces (16) as unforced errors (17) in a 6-1, 6-4, 6-2 defeat of Japan's Tatsuma Ito.
"That's probably as best as my serve can actually be in the moment, which I'm very pleased with". So, for me, he pushed me to go for more.
"That's definitely something that's useful going towards the second week of the grand slam". The 30-year-old is now ranked No. 47, firmly establishing himself in the biggest tournaments around the world and is starting to make a good living for himself, with nearly $1 million won in prize money in 2019.
For Federer, however, the victory marked another historic milestone and makes him the first man to achieve 100 wins at the Australian Open.
"I think John played a great match". I tried to figure it out as long as I could. "It had been a massive few months away from home".