SI.com Staff
Thursday June 4th, 2015

In the second women's semifinals match, No. 1 Serena Williams will take on No. 23 Timea Bacsinszky. Serena leads their head to head 2–0, including a win earlier this year in Indian Wells. Bacsinszky has a great backhand and is very strong on return of serve, but Serena has a huge first serve and power from both sides. One key for Serena will be to get plenty of her first serves in play, as this will allow her to take control of the points from the first shot.  Williams has lost serve 14 times in 5 matches, which is well below her normal serving level. How does the World No. 1 Serena compare with the soon-to-be top 20 Bacsinszky?

Check SI.com's French Open data hub page throughout the whole tournament for the latest data-driven infographics and charts from IBM, the official technology partner for the French Open. IBM captures and analyzes the data that powers all of the Grand Slams, as well as the digital platforms that extend the experience to fans around the world.

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