Pascolo started playing professionally in 1986, with local club FC Sion. At Sion, he failed to break into the first-team and left for Neuchâtel Xamax in 1989. During his first season at Xamax, he was used in a squad rotation system, only playing once every few weeks, but in his second season he hit top form and claimed the Number 1 jersey for himself. He signed for Servette FC in 1991 and became a fans' favourite almost immediately. Shortly after signing for Servette, he earned a call-up to the Swiss national team. After achieving all he could at Servette, he went to Serie A with Cagliari Calcio in 1996, but found first-team action hard to come by. And after just one season in Italy, he left for England's Nottingham Forrest. He played even fewer games there and returned to Switzerland in 1998 with FC Zürich. He was a first-team regular in Zürich for four seasons before he returned to Servette in 2002 to finish his career.