The rain returned in Lexington and Prague on Friday. Thunderstorms did wash out some play in Prague, while Lexington was able to carry on after a lengthy delay.

These are the Top 5 Photos from Friday.

1

Shelby Rogers

Rogers battled with nerves in the early portions of her quarterfinal match-up against 23-time major champion Serena Williams. The world No. 116 dusted off her jitters to fight past Serena and post a 1-6, 6-4, 7-6 (5) score. Rogers will next face Jil Teichmann who is also having a great week in Lexington.

Top 5 Photos 8/14:
Rogers rallies past 
Serena in Lexington

Top 5 Photos 8/14: Rogers rallies past Serena in Lexington

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2

Simona Halep

After two difficult three-set matches, the Romanian posted a seamless 6-2, 6-0 score against Magdalena Frech in Prague. The No. 1 seed awaits the winner of Irina-Camelia Begu and Sara Sorribes Tormo in the event's semifinal.

Top 5 Photos 8/14:
Rogers rallies past 
Serena in Lexington

Top 5 Photos 8/14: Rogers rallies past Serena in Lexington

3

Jil Teichmann

On the world No. 63's seventh match point she would taste victory against CiCi Bellis in Lexington. Teichmann defeated Bellis 6-2, 6-4 to reach her first hard-court semifinal.

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Top 5 Photos 8/14:
Rogers rallies past 
Serena in Lexington

Top 5 Photos 8/14: Rogers rallies past Serena in Lexington

4

Kristyna Pliskova

The 28-year-old was trailing 2-5 against Ana Bogdan, when the Romanian would limp over to her bench grimacing in pain from a left leg injury. Bogdan would be forced to retire, giving Pliskova a ticket into the Prague semifinals.

Top 5 Photos 8/14:
Rogers rallies past 
Serena in Lexington

Top 5 Photos 8/14: Rogers rallies past Serena in Lexington

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5

Elise Mertens

The No. 3 seed slipped past Eugenie Bouchard, 6-4, 1-6, 6-4, to set up a semifinal clash with Pliskova on the red clay. The last time the two competitors squared off was at last year's US Open, with Mertens winning in straight sets.

Top 5 Photos 8/14:
Rogers rallies past 
Serena in Lexington

Top 5 Photos 8/14: Rogers rallies past Serena in Lexington