Daniel Alejandro López and Matteo Trevisan were the defending champions but did not compete in the Juniors this year.
Hsieh Cheng-peng and Yang Tsung-hua were the defending champions but Yang did not compete. Hsieh partnered with Huang Liang-chi but they lost in the third round to Alexandros-Ferdinandos Georgoudas and Andrei Vasilevski.
Kevin Krawietz is a German professional tennis player who specialises in doubles.
Tiago Fernandes is a former Brazilian tennis player. He achieved the No. 1 ranking on the ITF Junior Circuit. Fernandes was coached by Larri Passos, the former coach of Brazilian former world #1 and three-time French Open winner Gustavo Kuerten.
Andrey Kuznetsov was the defending champion, but was no longer eligible to participate in the juniors.
Liam Broady and Tom Farquharson were the defending champions but Farquharson was no longer eligible to compete as a Junior. Broady competed with Filip Horanský and lost in the semifinals to George Morgan and Mate Pavić.
Roger Federer and Olivier Rochus were the defending champions, but they did not compete in the Junior's this year.
George Morgan and Mate Pavić were the defending champions but were no longer eligible to compete as Juniors.
Andrew Harris and Nick Kyrgios were the defending champions, but Harris was no longer eligible to compete in junior tennis, and thus could not defend his title.
Thanasi Kokkinakis and Nick Kyrgios were the defending champions, but were no longer eligible to compete in junior tennis.
Leoš Friedl and Daniela Hantuchová were the defending champions but decided not to play together. Friedl played with Tina Križan and lost in first round to Mike Bryan and Liezel Huber, while Hantuchová competed with Kevin Ullyett.
Jason Stoltenberg and Todd Woodbridge were the two-time defending champions, but Stoltenberg did not compete. Woodbridge played with Johan Anderson but lost in the semifinals to John-Laffnie de Jager and Wayne Ferreira.
Guillermo Coria and David Nalbandian were the defending champions, but they did not compete in the Juniors this year.
Florin Mergea and Horia Tecău were the defending champions, but they did not compete in the Juniors this year.
Kevin Krawietz and Andreas Mies defeated Jeremy Chardy and Fabrice Martin in the final, 6–2, 7–6(7–3) to win the men's doubles tennis title at the 2019 French Open. None of the four finalists had previously contested a major men's doubles final, and neither team was seeded for the tournament.
Mike Bryan and Jack Sock were the defending champions, but Sock could not participate due to injury. Mike Bryan played alongside his brother Bob, but lost in the third round to Nicolas Mahut and Édouard Roger-Vasselin.
Defending champion Nikola Mektić and his partner, Mate Pavić, defeated Dan Evans and Neal Skupski in the final, 6–3, 4–6, [10–7], to win the doubles tennis title at the 2021 Monte-Carlo Masters. It was the all-Croatian duo's second consecutive ATP Tour Masters 1000 title together and their fifth title overall of the year. The win also earned Mektić his first successful career title defense. The match was the second successive encounter between both teams in consecutive Masters 1000 finals.
Nikola Mektić and Mate Pavić defeated Marcel Granollers and Horacio Zeballos in the final, 6–4, 7–6(7–5), 2–6, 7–5 to win the gentlemen's doubles title at the 2021 Wimbledon Championships. It was their eighth title of the season, with Mektić winning his maiden major doubles title and Pavić winning his third. They became the first Croatian pair to win the title.
Neal Skupski and Desirae Krawczyk defeated Joe Salisbury and Harriet Dart in the final, 6–2, 7–6(7–1), to win the mixed doubles tennis title at the 2021 Wimbledon Championships. It was Krawczyk's second consecutive major title in mixed doubles, following her success at the French Open.
Matthew Ebden and Max Purcell defeated the defending champions Nikola Mektić and Mate Pavić in the final, 7–6(7–5), 6–7(3–7), 4–6, 6–4, 7–6(10–2) to win the gentlemen's doubles tennis title at the 2022 Wimbledon Championships. It was their first major title as a team, and their second title of the season. They saved a total of eight match points en route to the title, and twice recovered from two sets down, having been taken to five sets in five of the six matches they played.
Liam Broady 
