He scored a 12-yard volley at the 2008 Toulon Tournament against Turkey in a 2–1 win and was called up to the Olympics that summer but was forced to return home due to an injury.
In May 2008, Ferrari was named to the 22-player squad to represent the United States at the 2008 Toulon Tournament.
With the Olympic national team coached by Casiraghi, he won the 2008 Toulon Tournament, in which he played four games and scored a goal against the United States.
Leathers made two appearances for the US U-23 national team at the 2008 Toulon Tournament.
He made his U21 debut on 11 October 2005 against Moldova U21, he received his second cap for the Olympic team (de facto U21 team) at 2008 Toulon Tournament.
2008 | 2008 Summer Olympics | Toulon | Round-robin tournament | 2008 in music | United States presidential election, 2008 | Arena Football League (1987–2008) | UEFA Euro 2008 | tournament | Eurovision Song Contest 2008 | Single-elimination tournament | 2008 Sichuan earthquake | Masters Tournament | Barack Obama presidential campaign, 2008 | 2008 World Series of Poker | John McCain presidential campaign, 2008 | Canadian federal election, 2008 | Football at the 2012 Summer Olympics – Men's tournament | 2008 Commonwealth Youth Games | 2008 Rugby League World Cup | 2008 Summer Paralympics | 2008 in film | Tournament of Champions | Athletics at the 2008 Summer Olympics – Men's 4 × 400 metres relay | 2010 NCAA Men's Division I Basketball Tournament | 2008 ATP Tour | UEFA Euro 2008 qualifying Group G | Oregon legislative elections, 2008 | Nepalese Constituent Assembly election, 2008 | Malaysian general election, 2008 |