Question: Which American professional tennis player born in 1980 was a defending champion during the 2010 Wimbledon Championships – Women's Doubles?
Sentence (from "Venus Williams"): She is generally regarded as one of the all-time greats of women's tennis and, along with younger sister Serena Williams, is credited with ushering in a new era of power and athleticism on the women's professional tennis tour.
Relevant evidence: No