Errani was upset the other evening that the cramping Bertens was driven out in a wheelchair and after a fairly short time looked unmoved.

Today Bertens was close to needing a wheelchair but saved power in the long tournament and messed up the match in 58 minutes.

It was facilitated by the match being moved to center court Philippe-Chatrier where the covered roof made conditions easier.

Played double with Johanna Larsson

- The gravel was dry and the balls were not wet and bounced more.

It was easier to service.

That improved every part of my game, fifth-seeded Bertens, who received 81 percent of the first serve, told Reuters.

And she has got a taste:

- I am hungry for more, says Bertens, who for several years played doubles with Johanna Larsson.