It's her first quarterfinal appearance at a major since the 2016 Australian Open, where she lost to Williams in straight sets.
The velocity, even on Williams' first serve, was appalling in the third set - that there was an issue was evident.
Elsewhere in the women's draw, world number two Caroline Wozniacki of Denmark was beaten in straight sets by Daria Kasatkina of Russian Federation.
But she wanted to try.
The pectoral injury, however, isn't one she has experienced before. All for this moment.
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It criticised Trump's move this week and said it reserved the right to retaliate but avoided repeating its earlier threat. Ross was to have a dinner meeting Saturday evening with Vice Premier Liu He at the Diaoyutai State Guesthouse in Beijing .
In his article, he wrote: "I asked Serena about comments President Donald Trump made to me in 2004 about her and Maria Sharapova". I didn't manage to find the rhythm, to be focused on my match. "I've pretty much had every (other) injury in the book". So it's extremely disappointing. I made a commitment to myself and my team that if I wasn't at least 60% I wouldn't play.
"In my doubles yesterday, I tried a lot of different tapings and support types to see how it would feel under match circumstances".
It was the first time the 36-year-old has withdrawn midstream from a Grand Slam singles event.
"I'm going to stay here and see as many specialists as I can", Williams explained. It was really painful and I didn't know what it was...
This, of course, isn't the first time Williams has been asked a awful and sexist question. I have given up so much to be here.
"I am beyond disappointed". I have done a lot of fighting, and this is just the beginning.
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Shortly thereafter, her agency, ICM Partners, dropped Barr as a client, and Viacom networks pulled reruns of her show off the air. She also sent a message directly to Jarret, offering her apology.
Williams, who had entered the tournament unseeded, had won her last three matches in the tournament so far.
Sharapova and Williams clash in the Round of 16 at Roland-Garros on Monday afternoon and both will be determined to win as it would punctuate their respective comebacks - Williams because of pregnancy, and Sharapova because of a drugs ban.
The news means that Sharapova advances straight through to the quarter-finals, where she will take on the victor of the match between third seed Garbine Muguruza and Lesia Tsurenko.
Marco Cecchinato enjoys life-changing victory - French Open 2018
The Bulgarian, a two-time Grand Slam semi-finalist, has still never reached the second week at Roland Garros in eight attempts. Djokovic won the tournament in 2011, 2014 and 2015 but has failed to make it beyond the quarter-finals in the past two years.