Question:  Did Françoise Dürr play tennis professionally before Marin Čilić started to play professionally?
Sentence (from "1971 Virginia Slims Clay Court Championships"): The Virginia Slims Clay Court Championships, also known as the Virginia Slims of Chicago, was a women's tennis tournament played on outdoor clay courts at the Lake Bluff Bath & Tennis Club in Chicago, Illinois in the United States that was part of the 1971 WT Pro Tour.
Relevant evidence: No