Laura Siegemund beat Katie Swan 6-2, 6-4.
Johanna Konta then beat Ana Bogdan 7-5, 6-2.
So 3 of the Brits survive to the second round.
Tomorrow Heather Watson's match is the first on Court 1. She's against Anett Kontaveit, the 20th seed so a tough match. They've met 4 times before each winning twice but never on grass.