"Friday will be incredibly hard," Serena said before responding in jest to Venus' claim that when they last met in a Slam in the final of the 2017 Australian Open, her sister had an advantage since it was "two against one. "
That was a reference that Serena was in the early stages of pregnancy with her daughter Olympia.
"I think I had a small advantage, but it will be difficult for me on Friday," said Serena, 36.
Since Venus won its first showdown in Australia, Serena, who is looking for the 24th Grand Slam title, has accumulated an advantage over the last two decades, enjoying a superiority of 17-12 head-to-head.
"It's a tough match to have so early in the tournament, we would have liked to have played later, but it is what it is, it's not the end of the world," Serena added.
Venus, 38, and playing his 80th Slam, achieved his 775th victory in the race by eliminating Giorgi.
However, she was reluctant to talk about Serena when asked to describe the specific challenges.
"Are you hitting him now, any other questions about anything else?" she barked.
The defending champion and third seed, Sloane Stephens, also reached the third round with a marathon victory 4-6, 7-5, 6-2 over Ukraine qualifier Anhelina Kalinina.
Stephens triumphed after 2 hours and 46 minutes at the Arthur Ashe Stadium and will face the two time Australian Open champion and former world number one, Victoria Azarenka.
The American needed treatment in a hand blistered in the second set, as the crushing effect of heat and humidity took its toll.
However, the 10 minute pause between the second and third set was an opportune momentum.
"I just sat on the floor, changed my outfit, ate two bites of sushi and a granita," said Stephens, 25, after firing Kalinina, number 134 in the world.
Azarenka, runner-up of 2012 and 2013, achieved the third round for the first time in three years with a 6-1, 6-2 victory against Australian 25th seed Daria Gavrilova.
& # 39; 10, 000 times worse & # 39;
Azarenka was one of the first players to condemn the United States Tennis Association (USTA) for giving French player Alize Cornet a code violation for changing the shirt on the court on Tuesday.
The incident caused an immediate storm over sexism.
The Belarussian said the USTA showed a double standard to punish Cornet, while male players routinely take off their shirts when heat and humidity are damaged.
"If I said my true feelings, it would go out, because it was ridiculous," Azarenka said.
The USTA admitted that they were wrong to give Cornet a warning for having removed his shirt on the court after realizing that he had put the garment in front during a break from heat.
Cornet said she was surprised that the furor had caused so much controversy and that she was happy to accept the USTA's apology.
"I think it's very fair for them to apologize to me, I think the referee was probably overwhelmed by the situation," said Cornet, who insisted that Roland Garros ban the president of the French Tennis Federation (FFT). Roland Garros was much worse. genuinely worthy of being considered & # 39; sexist & # 39;
"The president of my federation lives in another moment and can still make these kinds of comments, they are totally shocking to me," he said.
"What Bernard Giudicelli said about Serena's cat suit was 10,000 times worse than what happened to me."
Ukraine's seventh seed, Elina Svitolina, beat Tatjana Maria 6-2, 6-3 to avenge a first-round loss to the German player at Wimbledon last month.
Russian tennis player Kaia Kanepi followed her first round victory against world number one Simona Halep by beating Sweden's Jil Teichmann 6-4, 6-3.
However, ninth-seeded Julia Goerges, semifinalist at Wimbledon, dropped to 7-6 (12/10), 6-3 loss to Ekaterina Makarova of Russia.