Maria Sharapova will be looking to register her first victory over Serena Williams in more than a decade when the pair meet on Thursday.
Williams' dominance over the Russian is second to none – she is on a 16-match unbeaten streak that stretches back to the 2004 Wimbledon final and has surrendered just one set in seven years.
Sharapova will be hoping that it will once again be on the hallowed turf of Wimbledon that she is able to turn the table on Williams, but she has her work cut out for her. The 28-year-old is bidding to make her first Wimbledon final since 2011, but having taken just one game off Williams the last time the two met on grass, at the 2012 Olympics, a major turnaround is required.
Williams has twice had to come from a set down to progress at this year's tournament, having been tested by first Heather Watson and then Victoria Azarenka, and on each occasion was able to up her game considerably to get the job done.
Having lost just once this year, Williams is going to be incredibly tough to beat.
In the day's first semi-final, 20th seed Garbine Muguruza faces off against 13th seed Agnieszka Radwanska in a match-up that few would have predicted.
Muguruza, who is bidding to become Spain's first women's finalist at Wimbledon since Conchita Martinez in 1994, is enjoying somewhat unprecedented success at the All England club. The 21-year-old is making her third appearance in the main draw, but had not previously progressed past the second round. However, having reached the fourth round at this year's Australian Open, and the quarter-finals at the French Open, her final four appearance at Wimbledon is the continuation of an upward trend at grand slams.
Radwanska was a Wimbledon finalist in 2012, going down to Serena Williams in three sets. The Pole followed that result up with a semi-final spot the following year.
The 26-year-old certainly has the edge in terms of big-match experience, but it's Muguruza who has had the better of the head-to-head battle in recent times. The pair have faced off four times in total, but Muguruza has won their last two contests, both of which have this year, first in Sydney and then Dubai.
Garbine Muguruza  v Agnieszka Radwanska 
Maria Sharapova  v Serena Williams 
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