Franco Davín is a tennis

Tennis

Tennis is a sport usually played between two players or between two teams of two players each . Each player uses a racket that is strung to strike a hollow rubber ball covered with felt over a net into the opponent's court. Tennis is an Olympic sport and is played at all levels of society at all...

 coach and a former tennis player from Argentina

Argentina

Argentina , officially the Argentine Republic , is the second largest country in South America by land area, after Brazil. It is constituted as a federation of 23 provinces and an autonomous city, Buenos Aires...

. He currently coaches fellow countryman Juan Martín del Potro

Juan Martin Del Potro

Juan Martín del Potro is an Argentine professional tennis player. Del Potro achieved a top-10 ranking by the Association of Tennis Professionals for the first time on October 6, 2008. In January 2010, he reached a career-high ranking of world no. 4...

, and was the captain of the Argentine Davis Cup

Davis Cup

The Davis Cup is the premier international team event in men's tennis. It is run by the International Tennis Federation and is contested between teams of players from competing countries in a knock-out format. The competition began in 1900 as a challenge between Britain and the United States. By...

 team. Under Davin's tutelage, Del Potro won the 2009 US Open, defeating Rafael Nadal

Rafael Nadal

Rafael "Rafa" Nadal Parera is a Spanish professional tennis player and a former World No. 1. , he is ranked No. 2 by the Association of Tennis Professionals...

 in the semifinal and Roger Federer

Roger Federer

Roger Federer is a Swiss professional tennis player who held the ATP no. 1 position for a record 237 consecutive weeks, and 285 weeks overall. As of 28 November 2011, he is ranked World No. 3 by the Association of Tennis Professionals . Federer has won a men's record 16 Grand Slam singles titles...

 in the final en route to the championship.

Davin won his first ATP-tour match at 15 years, 1 month against Hans Gildemeister

Hans Gildemeister

Hans Gildemeister Bohner , is a former Chilean tennis player of German ancestry, who won four singles and 23 doubles titles during his professional career. He is the brother of Heinz and Fritz Gildemeister, who are also tennis players...

 in Buenos Aires. He holds the Open Era record for being the youngest player to win a main level tour main draw match. Davin won three singles tournaments on the ATP Tour

Association of Tennis Professionals

The Association of Tennis Professionals or ATP was formed in 1972 by Donald Dell, Jack Kramer, and Cliff Drysdale to protect the interests of male professional tennis players. Since 1990, the association has organized the worldwide tennis tour for men and linked the title of the tour with the...

, and reached a career-best world ranking of 30th in October 1990.