Borsato was drafted in the 7th round, 135th overall by the Winnipeg Jets in the 1984 NHL Entry Draft. He grew up in Bramalea, Ontario and played Junior "B" hockey with the Bramalea Blues. He played collegiate hockey at Clarkson University from 1984 to 1988. He turned pro for the Moncton Hawks in 1987-88 and stayed there until recalled to the Winnipeg Jets for one game in the 1990-1991 season, and played the bulk of the subsequent season with the NHL team.
By 1995, he was playing in European leagues, where he would finish his career, having played for teams in Germany, Finland, and Switzerland. Borsato also played for Canada at the 1995 World Championship.
He retired in 2002.