Question: In the 2013 Citi Open – Women's Doubles, Aoyama successfully defended the title alongside Vera Dushevina, defeating Eugenie Bouchard and Taylor Townsend in the final, Bouchard is a Canadian professional tennis player, and became the first Canadian-born player representing Canada to reach the finals of a Grand Slam in singles, finishing runner-up to who?
Sentence (from "Williams sisters"): They became the first two players, female or male, to play in 4 consecutive grand slam singles finals from the 2002 French Open to the 2003 Australian Open; Serena famously won all 4 to complete the first of two "Serena Slams".
Relevant evidence: No