He has five European Tour wins and is best known for his second-place finish in the 1995 Open Championship, and his hole in one in 1995 Ryder Cup.

In the 1980s, Rocca struggled to retain a European Tour card and made several trips to the Qualifying School.

He began to make major strides in his career in 1990, which was the first season that he finished high enough on the Order of Merit to gain a tour card automatically.

He won five titles on the tour, the first of which was the 1993 Open de Lyon and the most prestigious of which was the 1996 Volvo PGA Championship.

The 2001 European Tour season was the last in which Rocca finished inside the top hundred on the Order of Merit, though the remained exempt through 2006 due to his 1996 Volvo PGA Championship win.