The Masters 1000 series consists of 9 tournaments in a season which award 1000 points to the winner. Known by various names since its introduction in 1990 as the 'ATP Championship Series', it has been called the 'ATP Masters 1000' since the 2019 season.
7 of the 9 tournaments which were a part of the Championship Series in 1990 are still played as Masters 1000 tournaments today, with the two exceptions being the Madrid Masters which became a Masters 1000 tournament in 2002, and the Shanghai Masters following suit in 2009.
Since its first year of inception which saw 7 different winners, a total of 62 other players have lifted a title in the tournament series in the ensuing three decades, the latest being Russia's Daniil Medvedev who joined the winners' club following his win at the 2019 Cincinnati Masters.
On that note, let us meet the 5 youngest players to have lifted a Masters 1000 title.
#5 Andre Agassi (19 years 331 days)
19-year-old American Andre Agassi became the second player to lift a Masters 1000 title in the second ever tournament of the Masters 1000 series, then called the ATP Championship Series, when he lifted the 1990 Miami title.
After Stefan Edberg's triumph at the first-ever Masters 1000 tournament at 1990 Indian Wells following a win over Agassi in the final, it was American teenager's turn to stand on the winner's podium at the expense of the Swede.
In a four-set final, Agassi took a two set lead and was bagelled by Edberg in the third before conceding only two games in the fourth set to become the first teenager to win a Masters 1000 title.
#4 Novak Djokovic (19 years 314 days)
After being thwarted in his first Masters 1000 final at 2007 Indian Wells by Rafael Nadal, the then 19-year-old Serb triumphed in the tournament category on his very next attempt in Miami.
Producing one of the finest weeks of his young career, Djokovic reeled off consecutive straight-set wins over Daniele Bracciali, Michael Llodra, and Feliciano Lopez before beating his Indian Wells conqueror Nadal in straight sets in the quarter-finals.
Dropping only game in the semi-final against another teenager Andy Murray, Djokovic beat qualifier Guillermo Canas, who had upset two-time defending champion Roger Federer in a third set tiebreak in the fourth round, in straight sets to become only the 5th teenager to triumph at a Masters 1000 tournament.
You may also like: Djokovic's 5 standalone Masters 1000 records.
#3 Andrei Medvedev (19 years 236 days)
19-year-old Ukrainian Andrei Medvedev became the youngest player to win a Masters 1000 title after beating Spain's Serge Bruguera in straight sets in 1994 to become the 5th different winner in as many editions of the Monte Carlo Masters.
In the process, Medvedev won his first title of the season, the seventh of his young career., and the first of 4 Masters 1000 titles he would win during the course of his career.
It was a remarkable triumph considering the fact that Medvedev overwhelmed former Masters 1000 winners - Jim Courier, Stefan Edberg in successive matches to reach his first Masters 1000 final where he usurped Agassi as the youngest player to lift a title in the tournament category.
#2 Rafael Nadal (18 years 318 days)
Rafael Nadal became the second-youngest player winner at a Masters 1000 tournament when the then 18-year-old beat Argentine Guillermo Coria in four sets to lift his first title in the tournament category at the 2005 Monte Carlo Masters.
Nadal would scipt more history at the tournament a year later where he became the first teenager to successfully defend a Masters 1000 title.
You may also like: Nadal's 5 biggest titles as a teenager.
The Spaniard is the only player to win multiple Masters 1000 titles before his 20th birthday, beating world no. 1 Roger Federer at the 2006 Rome Masters for his 6th title in the tournament category.
Monte Carlo would prove to be a happy hunting ground for Nadal as it was at this tournament in 2017 when he became the first player to win 10 titles at a Masters 1000 tournament or for that matter at any tournament. A year later, Nadal returned to lift his 11th title in the Principality which is a record for most titles won at a Masters 1000 tournament.
You may also like: Nadal's 10 standalone Masters 1000 records.
#1 Michael Chang (18 years 157 days)
A year after becoming the youngest-ever Grand Slam men's singles champion in the Open Era when he triumphed at 1989 Roland Garros, Michael Chang became the youngest champion in Masters 1000 history when he won the 1990 Coupe Rogers title.
The then 18-year-old American beat Pete Sampras in the semifinal before conquering first-time Masters 1000 finalist Jay Berger in a third-set tiebreak to win his first Masters 1000 title.
In the process, Chang usurped Andrei Medvedev to become the youngest player to lift a title in the tournament category - a record which has stood intact for 3 decades.
You may also like: 5 most recent players to have made their Masters 1000 breakthrough.