The Swiss and the Latvian have never played, but there’s no better time to begin than in the French Open semis, on both of their birthdays. Ostapenko will turn 20 on Thursday, while Bacsinszky will turn 28; those two ages might be a good barometer of how this match will go. The streaky, sweet-hitting Ostapenko will try to keep lightning in a bottle for one more round, while the more versatile and experienced Bacsinszky will try to find different ways to throw her younger opponent’s timing off. Ostapenko could hit her off the court, or she could do the same to herself. It seems slightly more likely that the steadier Bacsinszky, who was a few games from the French final two years ago, will find a way through.
Winner: Bacsinszky