At Gençlerbirliği he started to play for Turkey U21 since April 1996 and selected to 1997 Mediterranean Games.
He swam in the winning 4x100 m medley relay at the 1997 Mediterranean Games (Merisi, Fioravanti, A. Gusperti, Rosolino).
De Ascentis was capped for the U-21 and Olympic teams (the former of which won the 1997 Mediterranean Games).
His talent earned him a place in the Turkish under-21 team, first at 1997 Mediterranean Games where he continued to impress the scouts from many teams.
He was capped by the Turkey national football team 64 times from 1997 to 2004, and also won a silver medal with the Olympic team at the 1997 Mediterranean Games.
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He participated in the 1997 Mediterranean Games, starting all five matches en route to winning a silver medal.
He was the unused member of the Italy Olympic team that won the 1997 Mediterranean Games.
He also played for Turkish U20 team at 1993 FIFA World Youth Championship, Turkish Olympic team (de facto U21 team) at 1997 Mediterranean Games.
Olympic Games | 1997 | Mediterranean Sea | 1997 in music | Commonwealth Games | Summer Olympic Games | Pan American Games | 2006 Commonwealth Games | 2006 Central American and Caribbean Games | Swimming at the 2006 Central American and Caribbean Games | 2013 Southeast Asian Games | Winter Olympic Games | 2002 Commonwealth Games | 2007 Pan American Games | Titanic (1997 film) | United Kingdom general election, 1997 | Paralympic Games | 2010 Commonwealth Games | World Games | 2011 Pan American Games | Games Workshop | 2003 Pan American Games | Asian Games | 2013 Island Games | X Games | 2006 Asian Games | 2011 Pacific Games | 1997–98 in English football | Gay Games | The Hunger Games |