Orsanic 1989 professional tennis player. In individual he could show significant success in his career hardly why he specialized in the men's doubles. His first doubles title he celebrated in 1991 in San Luis Potosí at the local tournament of the ATP Challenger Tour. After another Challenger doubles title in 1992 he succeeded in 1993, his first victory in a tournament of the ATP World Tour, when he won at the side of Olli Rahnasto in San Marino. Overall, he was able to win eight ATP doubles titles during his career, outstanding case was the victory at the ATP International Series Gold tournament in Stuttgart. He also won ten Grand Slam doubles title of the tour, of which five in 1997. The highest quotation in the tennis world ranking he reached in 1993 with position 107 in single and in 1998 with position 24 in doubles.
In individual he never came out at the Grand Slam tournaments on the first round. In the doubles competition, he reached in 1997 and 2000, the semifinals of the French Open. In 1997 he was defeated with Lucas Arnold Ker, 2000 Jaime Oncins each against Todd Woodbridge and Mark Woodforde. In the mixed competition he was standing at the Australian Open, the French Open and the U.S. Open in the second round respectively.
Orsanic 1999 played a double game for the Argentine Davis Cup team. On the side of Lucas Arnold Ker he was defeated in a double Andrés Gómez and Nicolás Lapentti of Ecuador.
Following his professional career, he worked as manager of Luis Horna, Jose Acasuso and Pablo Cuevas. In 2007, he was team manager of the Argentine team at the World Team Cup, which won the event for themselves.