Youngest Title Winners

At the top of the Open Era list for Youngest ATP Title Winners stands Aaron Krickstein, who won Tel Aviv 1983 aged 16 years and 69 days in tournament-week age terms — the youngest recorded men's singles tour-level title winner of the Open Era. Krickstein is No. 1 at 16y 69d, while ATP's own bio notes that he became the youngest player ever to win a Grand Prix event at 16 years, 2 months and 13 days. In that final, Krickstein defeated Christoph Zipf 7-6, 6-3, turning Tel Aviv 1983 into the ultimate teenage title-winning milestone. He was not merely making an early appearance on tour: he actually finished the week as champion, setting a record that still stands as one of the most extreme age marks in men's tennis.

Krickstein dominates the very top of this record: he also won Boston 1984 aged 16 years and 349 days, then returned to win Tel Aviv 1984 aged 17 years and 39 days and Geneva 1984 aged 17 years and 46 days. That cluster makes him the defining teenage title-winner of the Open Era, not a one-week anomaly.

Behind him comes Michael Chang, who won San Francisco 1988 aged 16 years and 216 days, before later winning Roland Garros 1989 aged 17 years and 96 days — still the youngest men's Grand Slam singles title of the Open Era. Another major teenage benchmark is Lleyton Hewitt who won Adelaide 1998 aged 16 years and 314 days; in the strict ATP Tour era beginning in 1990, ATP lists Hewitt as the youngest champion at 16 years, 10 months and 18 days.

Other names near the top include Guillermo Perez-Roldan, Boris Becker, Andre Agassi, Bjorn Borg, Pat Cash, Mats Wilander, and Andrei Medvedev — all title winners before turning 18.

In this record, the milestone is not simply reaching a final or breaking into the tour early, but actually lifting a tour-level trophy: Krickstein set the Open Era ceiling at 16, Chang represents the Grand Slam-prodigy version of the record, while Hewitt is the modern ATP Tour-era benchmark for teenage title-winning precocity.