Daniil Sergeyevich Medvedev is a Russian professional tennis player.
Currently ranked world No. 3 in singles by the Association of Tennis Professionals (ATP), he is a former world No. 1, holding the ranking for a total of 16 weeks. Medvedev has won 20 ATP Tour singles titles, including the 2021 US Open and 2020 ATP Finals.
In the former, Medvedev defeated then-world No. 1 Novak Djokovic in the final to deny him the Grand Slam. In the latter, he became the first and only player to defeat the top three ranked players in the world en route to the year-end championship title. He has also won six Masters titles, and contested four major finals and nine Masters finals in all. His six Masters titles all came in different venues, making him only the sixth player in history to win ATP Masters titles at six different venues, and the first to achieve this with as few as six titles.
Medvedev made his ATP Tour main draw debut at the singles event of the 2015 Kremlin Cup. In 2017, he participated in a major for the first time at Wimbledon, where he defeated world No. 3 Stan Wawrinka.
In 2018, Medvedev won his first ATP Tour singles titles at Sydney and Winston-Salem, and his first ATP 500 title in Tokyo. He achieved a breakthrough in 2019, making his top 10 debut after Wimbledon and reaching six consecutive tournament finals, including at the US Open. In February 2022, Medvedev became the first man outside of the Big Four to hold the world No. 1 ranking since Andy Roddick in February 2004, the third Russian man following Yevgeny Kafelnikov in 1999 and Marat Safin in 2000, and the 27th man overall.