She was beaten in straight sets by Marie Bouzkova.
Four more Brits are in action today, including Katie Boulter against world number seven Madison Keys.
In the men’s draw, Cameron Norrie faces Argentina’s Federico Gomez, while Jacob Fearnley is playing Ugo Humbert at Roland Garros.
Sutton’s Jack Draper has the primetime night slot on Philippe Chatrier when he takes on home favourite Gael Monfils.