- 2.2.1 wins ( 8)
- 2.2.2 finals ( 3)
Rosset was successful as a teenager and was ranked 4th Junior World Ranking. In 1989 he won in Geneva on sand in the final against Argentina's Guillermo Pérez- Roldán his first professional tournament. He is unusually large (2.01 m) for a tennis player, was thus but one of the most feared Aufschläger on the tour. He held many years with 215 km / h the record for the fastest measured surcharge. A total of 15 tournament victories he achieved in the individual on all surfaces. His highest world ranking placement in individual he had in September 1995 with 9-position, his best quotation in a double position was 8 in 1992.
His biggest success in a Grand Slam tournament 's singles was reaching the semifinals at the French Open in 1996. Also in double Rosset was successful, get him eight doubles titles. His longtime doubles partner was his countryman Jakob Hlasek, with whom he won the 1992 French Open in doubles.
In 1992, Rosset with the Swiss Davis Cup team the finals, where the Swiss subject, however, the United States 1-3. From 2002 to 2005 he was captain of the Swiss Davis Cup team. In 1996 he won the Swiss team World Team Cup in Dusseldorf. At the Olympic Games in Barcelona in 1992, he defeated in the final of the Men's Single Page Spaniard Jordi Arrese in five sets and was surprisingly Olympic champion. He won at that time the only Swiss an Olympic medal. In October 2005, he graduated at the Swiss Indoors in the doubles competition his last mission on the professional tour, his last single games he played in February 2005 at the Challenger tournament in Lübeck. After he finished his professional career.
In September 1998, Rosset narrowly escaped the crash of Swissair flight 111 over Nova Scotia. After leaving the U.S. Open he had reposted shortly. In addition to his Olympic victory, his name is connected with its momentous outburst. In the final of the Hopman Cup 1996, he led, together with Martina Hingis in the decisive third set against Goran Ivanisevic and the double Iva Majoli. From anger over four awarded match points he slammed his fist violently against a gang. Due to injury, he had to give up because of that, later a hairline fracture was diagnosed in his hand.