Question: Who was first to win a Grand Slam doubles championship, Heather Watson or Édouard Roger-Vasselin?
Related documents: [0]  [DOC] Heather Miriam Watson (born 19 May 1992) is a British tennis player and a Wimbledon Mixed Doubles Champion. She is a former British No.1 and current British No. 2 behind Johanna Konta. [END] 
[1]  [DOC] Édouard Roger-Vasselin (] ; born 28 November 1983) is a male tennis player from France. He won the men's doubles title at Roland Garros in 2014, partnering Julien Benneteau. He is the son of 1983 French Open semifinalist Christophe Roger-Vasselin. [END] 
Answer: 
Édouard Roger-Vasselin
Édouard Roger-Vasselin