The defending Wimbledon champion Serena Williams is looking in imperious form, following her second round scare against her compatriot Christina McHale.
Williams plays a familiar face in the quarterfinals of Wimbledon, Anastasia Pavlyuchenkova. The Russian is seeded 21st and she is no stranger to reaching the latter stages of Grand Slam tournaments.
Pavlyuchenkova has been ranked as high as 13 back in 2011 and, she reached two Grand Slam quarterfinals in that same year, losing to Francesca Schiavone in three sets at the French Open and her opponent tomorrow, Serena Williams in straight sets at the US Open.
The world number one will be desperate to lift the Venus Rosewater Dish for a seventh time on Saturday as she wasn't won a slam, since she lifted that very trophy, 12 months ago.
Due to continuous rain delays that plagued Wimbledon, both Williams and Pavlyuchenkova had to play their third round matches on Middle Sunday, which they were victorious in straight sets and on Manic Monday, they both were winners in straight sets again.
Both players come into this match with form and anything is possible in tennis as Roberta Vinci shocked Williams in the semifinals of the US Open in New York last year.
How they got here
The top seed, Williams won her first round match in straight sets against Swiss qualifier Amra Sadikovic 6-2, 6-4 and in the second round, Williams overcame her compatriot Christina McHale 6-7, 6-2, 6-4.
The six-time Wimbledon champion's third round match was played on Middle Sunday against German, Annika Beck and Williams thrashed her opponent 6-3, 6-0 despite being a break down in the early stages.
The American's win over Beck was a significant victory as it was Williams' 300th win at Grand Slams, which is a remarkable achievement.
Williams was stressed in her fourth round encounter, with Svetlana Kuznetsova and despite having a 3-1 lead in the first set, the American crumbled and fell a break behind.
Kuznetsova served for the opening set but failed to do so, and did not win another game as they played under the roof on Centre Court in the second set, Williams improved immensely against Kuznetsova winning that match 7-5, 6-0.
The 25-year-old Russian, like Williams, has only dropped one set en route to her third Grand Slam quarterfinals and she has produced some good tennis and picked up some good wins to get there.
In the first round, Pavlyuchenkova could have been eliminated from Wimbledon but she recorded a three sets victory over Hsieh Su-Wei and in the second round despite being a break down for most of that set, the Russian recovered to beat the French Open quarterfinalist Yulia Putintseva in straight sets.
The former world number 13 produced two huge wins on Middle Sunday and Manic Monday.
Pavlyuchenkova defeated the 11th seed and last year's quarterfinalist Timea Bacsinszky 6-3, 6-2 on her birthday and less than 24 hours removed, the Russian-backed up her win impressively by taking out last year's quarterfinalist and 27th seed CoCo Vandeweghe 6-3, 6-3.
Pavlyuchenkova on reaching the quarterfinals
"I'm honestly quite cool about it, I'm happy to be in the quarterfinals for sure, It's a dream come true, I would love to continue making progress in the draw and keep winning but I don't expect anything at all, I wasn't expecting anything yesterday or today, I'm just going out there doing my thing, I work, results are coming, great, if not next one it's fine."
The Russian on Williams
Pavlyuchenkova elaborated, "I've won one set against her, five times that we've played, and I don't have to say anything about her, I think everyone knows what she's like, it probably depends on how I'm going to start the match."
Williams on Pavlyuchenkova
"She's a really good player, you know we've had some tough matches in the past, I just know that going into that match, I definitely need to be ready."
"I've lost to players who have never beaten me in the past in some big situations, I definitely don't want that to happen."
Breakdown of their rivalry
Williams and Pavlyuchenkova have played each other five times on the WTA tour and the American has a flawless 5-0 head-to-head record, dropping one set in the process.
The pair have faced each other three times on clay and twice on hard courts, including two meetings at Grand Slams previously.
The duo faced each other for the first time at the French Open in 2010, where Pavlyuchenkova won her solitary set in five meetings against Williams. The former French Open champion won that match 6-1, 1-6, 6-2 in the third round.
Their second meeting was a little over a year, as they faced off in the quarterfinals of the US Open, which Williams won 7-5, 6-1, en route to the final where she was thrashed by Sam Stosur.
Williams won their next two meetings at the Mutua Madrid Open in 2012 and in the final of Brisbane in 2013 by the exact same scoreline 6-2, 6-1.
Their most recent meeting was at the Internazionali BNL d'Italia in Rome last year, which Williams was victorious 6-1, 6-3 but withdrew from her scheduled match with McHale as a precaution before she won her third title at Roland Garros.
Match analysis
The good news for Pavlyuchenkova coming into this clash with Williams is that she's been to a couple of Grand Slam quarterfinals before and she shouldn't feel overwhelmed by the occasion.
The defending champion isn't taking anything for granted, and if her serve is working perfectly she should have little problems dealing with the Russian.
The Russian has a powerful forehand which works perfectly on the grass but the issue for the Russian is that Williams is a superb returner.
Williams' path to the final is straightforward as the winner of this match will play Dominika Cibulkova or Elena Vesnina in the semifinals.
The world number one has been ranked in that position since 2013 and she could relinquish her ranking to Angelique Kerber depending on how both of them progress through the draw.
This match will take place second on Centre Court and it should be a good match but if Williams plays like she did against Kuznetsova then Pavlyuchenkova could be in trouble.
Prediction: Williams in straight sets