[Voo de Mar]

Franco Davin - the youngest winner of a match at the main-level

Franco Davin [Arg] 15 years, 1 month, 14 days - Buenos Aires 1985, Hans Gildemeister 4-6, 6-3, 6-4
Tommy Ho [USA] 15 years, 2 months - Rye Brook 1988, Matt Anger 6-4, 3-6, 6-4
Jimmy Arias [USA] 15 years, 6 months - Palm Harbor 1980, Warren Maher 7-6, 6-1
Michael Chang [USA] 15 years, 6 months - US Open 1987, Paul McNamee 6-3, 6-7, 6-4, 6-4
Andre Agassi [USA] 15 years, 9 months - La Quinta 1986, John Austin 6-4, 6-2
Bjorn Borg [Swe] 15 years, 10 months - Madrid 1972, Antonio Zugarelli 7-6, 6-3
Mats Wilander [Swe] 15 years, 10 months - Bastad 1980, Jan Kallquist 6-4, 6-4
Richard Gasquet [Fra] 15 years, 10 months - Monte Carlo 2002, Franco Squillari 7-6, 3-6, 7-5
Rafael Nadal [Esp] 15 years, 10 months - Mallorca 2002, Ramon Delgado 6-4, 6-4
Ryan Harrison [USA] 15 years, 11 months - Houston 2008, Pablo Cuevas 6-4, 6-3

In 2008 Ryan Harrison (15 years, 11 months) won first ATP match defeating Pablo Cuevas. Harrison became tenth player (5th American) in the Open era to win an ATP match before his 16th birthday The stats...​

 

[Voo de Mar]

Aaron Krickstein 16 years, 28 days when he defeated Stefan Edberg (17 yrs., 8 mons.)
6-3, 6-2, 3-6, 4-6, 7-6 (!) in the 1st round of US Open 1983. The youngest-ever Grand Slam match!

Marcos Baghdatis 15 years, 4 months when he defeated Bert Van Driessen 3-6, 6-3, 7-6 (Futures in Nicosia 2000)

 

[ExcaliburII]

poor franco such a good player who did nothing.

 

[Voo de Mar]

unfortunately

 

[Greg-Pete fan]

Davin was good only on clay

 

[meninosantos]

You're saying ATP Main draw match?
Gastão Elias won 2 matches in Estoril qualy last years with 15 years...And enter the main draw as a LL

http://www.estorilopen.net/en/news/2006/sun_qual_men.asp

 

[meninosantos]

You're saying ATP Main draw match?
Gastão Elias won 2 matches in Estoril qualy last years with 15 years...And enter the main draw as a LL

http://www.estorilopen.net/en/news/2006/sun_qual_men.asp

With 15 years 5 months and 4 days

 

[Voo de Mar]

With 15 years 5 months and 4 days

A talented young man from Portugal He had played in Estoril main draw but lost in the 1st round to Tursunov 2-6, 1-6.

 

[Voo de Mar]

Stefan Kozlov (USA), 15 years 5 months, led *4:3 (30-all) in the 3rd set (Newport, 1R) against Michal Przysiezny after saving 4 MPs in 2nd set, but lost 3-6 7-6(9) 4-6 cramping in the end.

 

[bry17may]

@Voo de Mar
I just found 2 more cases and in the same tournament, this doesn't include Davis Cup matches

Larry Gottfried Boca Raton 1975 beating Manuel Santana with 15 years 3 months
Van Winitsky Boca Raton 1975 beating Mike Machette with 15 years 11 months