Who is the youngest male Grand Slam singles champion in the Open Era?

Michael Chang is the youngest male Grand Slam singles champion in the Open Era, winning the 1989 French Open at 17 years and 109 days old.

Chang defeated Sweden’s Stefan Edberg in a five-set final, 6–1, 3–6, 4–6, 6–4, 6–2. The title made him the youngest man to win a major singles championship, a record that still stands. He was also the first American man to win the French Open since Tony Trabert in 1955.

Chang’s run is especially remembered for his dramatic fourth-round victory over world No. 1 Ivan Lendl. Suffering severe leg cramps, Chang used high looping shots, an underarm serve, and an unusually aggressive receiving position to disrupt Lendl’s rhythm. He then completed the tournament by beating Ronald Agénor, Andrei Chesnokov, and Edberg.

A common mix-up is confusing this record with the youngest player to win any major title, including the women’s game or junior events. The question specifies male singles champions in the Open Era, the period beginning in 1968.