Pusa made his televised debut at the 1999 Winmau World Masters, reaching the semi-finals with wins over Andy Gudgeon, former World Champion Steve Beaton and Andy Jenkins before losing to Wayne Jones.
In 2000, Pusa reached the final of the Finnish Open, losing to Mervyn King.
He then faced then-Masters champion John Walton in the quarter-finals, where he lost 14 straight legs against the Englishman, a Lakeside record.
Pusa went on to win just two legs as Walton won the match 5–0 and eventually became World Champion.
Pusa bounced back by winning the 2001 Norway Open, beating Kevin Painter in the final.