 Did Françoise Dürr play tennis professionally before Marin Čilić started to play professionally?
Marin Čilić: Marin Čilić (; born 28 September 1988) is a Croatian professional tennis player. Marin Čilić:  Čilić first came to international prominence by defeating then-World No. 2 Andy Murray in the fourth round of the 2009 US Open.
i don't know