At the Belgrade competition Behr enjoyed one of his best singles tournaments in his career in February 2004, before falling to Marco Chiudinelli 1–6, 2–6 in the semis.
Marco Polo | Marco Stroppa | The Travels of Marco Polo | Marco Pierre White | Marco Antonio Muñiz | Marco Materazzi | Marco Delonge | Marco Borsato | Marco Rubio | Marco Polo Bridge Incident | Marco Island, Florida | Marco Island | Marco Ferreri | Piazza San Marco | Marco Barrientos | MARCO | San Marco Argentano | Marco Venturini | Marco Travaglio | Marco Simoncelli | Marco Pantani | Marco Pallis | Marco Huck | Marco Fu | Marco Follini | Marco Dorigo | Marco Doria | Marco Cyncar | Marco Blaauw | Marco Aurelio Soto |