Serena Williams’s record in Grand Slam women’s doubles finals was 14–0. She won all 14 major doubles finals she played, partnering exclusively with her sister, Venus Williams.
The Williams sisters’ partnership produced four Australian Open titles, two French Open titles, six Wimbledon titles, and two US Open titles between 1999 and 2016. Their run included four consecutive Olympic doubles gold medals? No—the sisters won three Olympic doubles gold medals, in 2000, 2008, and 2012; their Grand Slam final record is a separate achievement.
A common mix-up is confusing Serena’s 14–0 Grand Slam finals record with her overall doubles finals record. Across all listed WTA doubles finals, Serena went 23–2, including two non-major runner-up finishes. The 14–0 figure refers only to finals at the Australian Open, French Open, Wimbledon, and US Open.