There was plenty of star power on court Saturday. Who shone brightest? A look at the Top 5 photos from a busy day of semifinal action. (all photos by Getty Images)

1

Aryna Sabalenka

The Belarusian had reason to appear relaxed after completely dominating world No. 3 Simona Halep, 6-3, 6-2, in the semifinals of the Porsche Tennis Grand Prix.

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Top 5 Photos 4/24:
Sabalenka dominates 
Halep in Stuttgart

Top 5 Photos 4/24: Sabalenka dominates Halep in Stuttgart

2

Aslan Karatsev

In an Australian Open semifinal rematch, the Russian came out on top this time with a gripping 7-5, 4-6, 6-4 victory over Novak Djokovic.

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Top 5 Photos 4/24:
Sabalenka dominates 
Halep in Stuttgart

Top 5 Photos 4/24: Sabalenka dominates Halep in Stuttgart

3

Stefanos Tsitsipas

The Greek is one win away from backing up last Sunday's Monte Carlo triumph following his 6-3, 6-3 dismissal of Jannik Sinner—his ninth consecutive victory.

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Top 5 Photos 4/24:
Sabalenka dominates 
Halep in Stuttgart

Top 5 Photos 4/24: Sabalenka dominates Halep in Stuttgart

4

Ashleigh Barty

The Australian, who battled past Elina Svitolina, 4-6, 7-6 (5), 6-2, to grab the first Stuttgart final berth on her 25th birthday, was presented with flowers (and an obligatory Happy Birthday serenade).

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Top 5 Photos 4/24:
Sabalenka dominates 
Halep in Stuttgart

Top 5 Photos 4/24: Sabalenka dominates Halep in Stuttgart

5

Rafael Nadal

The 11-time Barcelona winner remained perfect against compatriot Pablo Carreno Busta, improving to 8-0 lifetime thanks to his 6-3, 6-2 performance.

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Top 5 Photos 4/24:
Sabalenka dominates 
Halep in Stuttgart

Top 5 Photos 4/24: Sabalenka dominates Halep in Stuttgart