The Latest on the French Open (all times local):

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4:29 pm.

Garbine Muguruza is putting Serena Williams on the back foot with her powerful shots and broke for a 2-1 lead in the second set.

Williams dropped her serve for the third consecutive time.

But will the Spanish player hold her nerve? The last time she broke, she immediately allowed Serena back in the match with three double faults.

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4:15 p.m.

Garbine Muguruza has served out the first set in her French Open final against Serena Williams.

The fourth-seeded Spaniard broke for a 6-5 lead with two consecutive crosscourt attacks that left Williams stranded on the red clay, then held to seal the set 7-5.

Muguruza saved break points with two big serves when down 15-40, then needed three set points before taking it.

Williams has been struggling with her forehand, making unusual errors on her signature shot.

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4:00 p.m.

A crosscourt forehand winner and a backhand mistake from Garbine Muguruza have given Serena Williams her first break in the French Open final.

It's a very tight match so far, with Williams ahead 5-4 in the opening set.

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3:40 p.m.

Garbine Muguruza got the first break of serve in her French Open final against Serena Williams.

Despite the slow conditions on Court Philippe Chatrier, the women's final has started at a high pace.

Both players have been exchanging powerful groundstrokes from the baseline with Serena applying pressure immediately with her aggressive returns.

Muguruza saved two break points to level at 2-2 in the opening set and broke in the next game after Williams hit a double fault.

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3:25 p.m.

The French Open final between top-ranked Serena Williams and fourth-seeded Garbine Muguruza has started.

Under cloudy skies and in a damp atmosphere, Williams won the first point of the match — as Muguruza sent a backhand long — and held her serve at love.

This is the second time that Muguruza and Williams are playing each other at Roland Garros. Two years ago, Williams was upset 6-2, 6-2 in the second round by her Spanish rival.

At age 34, the American is bidding to earn her 22nd major championship and equal Steffi Graf's Open-era record. She is the defending champion in Paris.

The 22-year-old Muguruza is playing in her second Grand Slam final after losing to Serena in the 2015 Wimbledon final.