Question: Are Radek Štěpánek and Heather Watson both Grand Slam doubles champions?
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