Nine-time champion Rafael Nadal beats Benoit Paire 6-1 6-4 6-1
Men's champion Novak Djokovic beats Marcel Granollers 6-3 6-4 6-2
Britain's Aljaz Bedene beats Ryan Harrison 6-4 6-0 3-6 6-1
Women's champion Garbine Muguruza through in straight sets
Listen to online only radio commentary
Andrea Hlavackova
Grand Slam doubles champion in Paris on BBC Radio
It is very important for Muguruza to get the good early start and build some confidence.
She is showing sharp form right from the beginning, that is a great sign for her.
*Muguruza 1-0 Schiavone
What a brilliant start from the defending champion.
A brutal backhand winner at the net brings Garbine Muguruza three break points.
And she takes the first game and first break with the same move.
Muguruza v Schiavone
Garbine Muguruza and Francesa Schiavone are out on the boiling hot clay and are about to get under way...
Italian Schiavone to serve first.
If you fancy some online only radio coverage of the action at Roland Garros you'll find it at the top of this page, courtesy of BBC Radio 5 live sports extra.
Russell Fuller and Delyth Lloyd are your commentators.
Bedene v Harrison
Image source, Getty ImagesBritish number three Aljaz Bedene comes into this match in decent form on his favourite surface.
He has won two titles on clay this year - both on the second-tier challenger circuit - and reached the final of the ATP Tour event in Hungary.
Defeat to Lucas Pouille brought to an end a 16-match winning run for the Slovenian-born Briton which played a big part in him climbing from outside the world's top 100 in March to his current position of 52.
His opponent Ryan Harrison is ranked 42nd. Should be tight.
French Open 2017
The last time Garbine Muguruza played at Roland Garros, this happened...
Image source, Getty ImagesTrust me, she was elated.
Muguruza pulled off a shock win against Serena Williams in the 2016 final to lift her first Grand Slam trophy.
The 23-year-old Spaniard hasn't quite been able to match that success since, after going out early at Wimbledon and the US Open and in the quarters in Australia this year.
Today, she opens the defence of her title against Francesca Schiavone, the 36-year-old world number 78 who won the French Open in 2010.
Piers Newbery
BBC Sport in Paris
There are some big names in action today but none carry the burden of expectation that currently weighs down on Kristina 'Kiki' Mladenovic. The world number 14 is the big French hope, and she beats the likes of Nadal, Djokovic and Muguruza as cover star for today's programme. 'Kristina Mladenovic - l'ambitieuse' reads the headline. No pressure.
French Open 2017
Welcome to day two at the French Open!
We'll be bringing you live updates from the first women's match of the day on Philippe-Chatrier court between reigning champion Garbine Muguruza and 2010 winner Francesca Schiavone, while also keeping one eye on British number three Aljaz Bedene against Ryan Harrison.
Then later on, we'll have coverage of the big boys: Rafa Nadal and Novak Djokovic.
French Open 2017
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Image source, Getty Images