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2:24 p.m.
It was a tricky test, but Caroline Wozniacki passed it smoothly.
The former top-ranked player from Denmark stopped Karin Knapp's good run on clay this season with a 6-3, 6-0 win to reach the second round of the French Open.
Knapp arrived in Paris on the back of her second career title at the Nuremberg Open last week and with an 8-2 record on clay. But she was no match for the fifth-seeded Wozniacki, who made it to the quarterfinals at Roland Garros five years ago.
Wozniacki saved the only break point she faced in the first set and limited her mistakes to nine unforced errors.