He was a member of the United States U-20 men's national soccer team at the 1993 FIFA World Youth Championship.
Gentile attended Livonia Churchill High School along with Scott Lamphear and Jeff Cassar where they were finalist in the Class A State Championship in 1990 as a Junior.
In 1995, the Badgers won the NCAA Men's Soccer Championship while Gentile was selected a third team All-American.
In 1993, he was part of the United States U-20 men's national soccer team at the 1993 FIFA World Youth Championship, but he never entered a game in the tournament.
[4] The Rapids released Gentile during the preseason and he signed with the Milwaukee Rampage of the USISL.