"Serena is Serena," Sakkari said after advancing earlier Saturday by beating 19-year-old American Amanda Anisimova 6-3, 6-1. "You have to come up with some great tennis. Otherwise there is no chance against her."
But things didn't go as organisers may have expected.
The Austrian will now challenge 2014 champion Marin Cilic of Croatia in the third round. Thiem has a 2-0 lead in their head-to-head series.
Then in the third set, Williams was rarely troubled by her rival en route to the victory.
"We are already working hard to achieve our goal of going to Qatar. It's a challenge that affects all of Ecuador. We know it's not going to be easy and we're focused on giving everything we've got."
The safety car came in at the end of lap 23, by which time almost all the drivers had made their pit stops legitimately, but almost immediately Charles Leclerc lost control of his Ferrari and crashed heavily at Parabolica, forcing proceedings to be halted while marshals cleared Leclerc's car and repaired damage to the barrier.
"He did well in the most time of this match, I think Han deserves a reward,"
The 60-year-old's anniversary might well turn into the most significant challenge the 2014 World Cup-winning coach has ever faced.
NAIROBI, Sept. 4 (Xinhua) -- Kenya is backing World Athletics' (WA) new testing program that was launched on Tuesday targeting top road runners in marathon, half-marathon and long distances.
"Our director was against the idea at first, but we did this once in 2013 and it worked, I won," said Sagan, who finished 13th after his bike lost its chain in the sprint. Enditem
"Honestly, it's unbelievable, I'm not sure I'm realising what's happening right now. It was such a crazy race and we capitalized on the red flag. To get my first win in Formula 1, I am struggling for words," said a disbelieving Gasly after the race.