Holger Vitus Nødskov Rune (; born 29 April 2003) is a Danish professional tennis player. He was ranked as high as No. 9 in singles by the Association of Tennis Professionals (ATP), which he first achieved on 30 January 2023, making him the highest-ranked Danish singles male tennis player in the ATP rankings. Rune has won three ATP Tour singles titles, including a Masters 1000 title at the 2022 Paris Masters, and produced his best Grand Slam performance at the 2022 French Open by reaching the quarterfinals in his main draw debut at the tournament. As a junior, Rune was ranked as high as world No. 1 and won ten titles on the ITF Junior Circuit, including the 2019 French Open boys' title. After turning professional in 2020, he won five titles on the ITF World Tennis Tour and five on the ATP Challenger Tour and made his top 100 debut in the 2022. Three months later, Rune reached his first ATP Tour final at the 2022 Bavarian International Tennis Championships, where he won his first title and subsequently entered into the top 50. By winning the Paris Masters later that year, Rune made his top 10 debut and became the first player on record (since ATP Rankings began in 1973) to beat five top-10 opponents in the same event (outside the ATP Finals). Early life Rune was born on 29 April 2003 in Gentofte, Denmark, to Aneke Rune and Anders Nødskov. He has a sister named Alma. He began playing tennis at the age of 6 because his sister played and he started to take the sport seriously. Throughout his childhood, he was coached by Lars Christensen who still remains his head coach and, along with his mother, is credited as his biggest inspiration. His idols growing up were fellow tennis players Rafael Nadal and Roger Federer. Junior career In 2014, he became Danish U12 champion in mixed doubles with Clara Tauson. He started training at the Mouratoglou Academy in 2016. In 2017, he won the European U14 singles championship. At age 15, he became the youngest Danish male singles champion by winning the 2019 indoor tournament. On 8 June 2019 Rune defeated Toby Alex Kodat to win the 2019 French Open boys' singles title. Holger received a wildcard and won a match at the 2019 Blois ATP Challenger in June. At the time, he was 16 years, 1