Career
Leftheris started skating at age 12 and began pair skating at 15. They did not get a second event because the USFSA did not send skaters to any of the events following the September 11, 2001 attacks. Leftheris teamed up with Naomi Nari Nam in April 2005.
After winning both the Regional and Pacific Coast Sectional, the pair placed 5th at the 2006 United States They went on to the 2007 Four Continents Figure Skating Championships and placed 6th.
In the 2007–2008 season, they withdrew from their Grand Prix events with injury. They placed 7th at the 2008 United States. Naomi Nari Nam announced her retirement from competitive skating on October 10, 2008, citing her recurrent hip injury.
He began competing with new partner Angelyn Nguyen in 2009. They withdrew from the United States. Championships before the event began.
They finished 8th at the 2011 United States.