Daniil Sergeyevich Medvedev (Russian: Дании́л Серге́евич Медве́дев, pronounced [dənʲɪˈiɫ mʲɪdˈvʲedʲɪf]; born 11 February 1996) is a Russian professional tennis player. His career-high singles ranking by the Association of Tennis Professionals (ATP) is world No. 3, which he first achieved in February 2021. He has won nine ATP Tour singles titles, including the 2020 ATP Finals where he defeated Novak Djokovic, Rafael Nadal, and Dominic Thiem. With the win, Medvedev became the first and only player to defeat the top 3 ranked players in the world en route to the title. Medvedev was also the runner-up at the 2019 US Open and the 2021 Australian Open, where he lost to Nadal and Djokovic, respectively. Medvedev made his ATP main draw debut at the doubles event of the 2015 Kremlin Cup. In 2016, Medvedev won his first singles match at the 2016 Ricoh Open in the Netherlands. In the next year, he participated in a Grand Slam for the first time at Wimbledon, where he defeated world No. 3, Stan Wawrinka, but lost in the next round. Medvedev would, in 2018, win his first ATP 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 at Wimbledon and reaching six consecutive tournament finals, including a Grand Slam final. Medvedev is one of just two active players outside of the Big Four with three Masters 1000 titles, the other one being Alexander Zverev, against whom he earned two of these titles. Medvedev is a defensive baseliner based on mirroring his opponent's play. His playstyle incorporates strong returns with as few mistakes as possible and making games unpredictable.