The career of Caroline Wozniacki, a Danish tennis professional born in Odense in 1990, includes 71 weeks ranked as the world No. 1. Her tenure at the top of the WTA rankings spanned significant periods in 2010 and 2011, establishing a baseline for consistency in women's singles during her era of competition.
Early Development
Wozniacki is of Polish descent and began her formal tennis training in Denmark after her parents, Anna and Piotr, moved to the country for her father's football career. Her early progression through the ITF Junior Circuit included a junior title at the 2006 Wimbledon Championships. By the end of her youth career, she achieved a world ranking of No. 2.
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Following a successful junior transition and being named WTA Newcomer of the Year in 2008, Wozniacki secured her first WTA Tour titles. Her professional achievements comprise 30 WTA Tour-level singles titles. Among these, she attained a major victory at the 2018 Australian Open and secured the 2017 WTA Finals title. She also reached the final rounds of the US Open in 2009 and 2014.
Retirement and Return
Wozniacki initially retired from professional play after the 2020 Australian Open. During her absence, she worked as a commentator for ESPN and Tennis Channel starting in 2022. She returned to professional competition at the 2023 Canadian Open and the US Open. In November 2025, she stated she was likely finished with the sport professionally.
Recognition and Legacy
Beyond her tournament play, Wozniacki represented the Kingdom of Denmark at the 2008, 2012, and 2016 Summer Olympics. Her professional contributions earned her the Danish Sports Name of the Year in 2010 and 2018. Additionally, she was made a Knight of the Order of the Dannebrog in 2018 and inducted into the Danish Sports Hall of Fame in 2023.
Fast facts
- Born: 1990, Odense, Denmark
- Major Title: 2018 Australian Open
- WTA Singles Titles: 30
- Olympic Appearances: 2008, 2012, 2016
- Languages spoken: Danish, English, Polish
- Education: Marie Kruses Skole; Harvard University
Questions readers ask
How many weeks did Wozniacki spend as world No. 1?
She held the WTA world No. 1 ranking for a total of 71 weeks.
Did Wozniacki retire permanently after 2020?
She retired after the 2020 Australian Open but returned to professional tennis at the 2023 Canadian Open.
Achievements
- Knight of the Order of the Dannebrog
- Danish Sports Hall of Fame
- Competed at the 2016 Summer Olympics
- Competed at the 2008 Summer Olympics
- Competed at the 2012 Summer Olympics
