Jerzy Piskun competed at the 1960 and 1964 Olympic Games. He played at four European Championships, winning silver in 1963 and bronze in 1965. Domestically he played for Polonia Warszawa, winning the Polish title in 1959 and finishing second in 1957 and 1960. He also helped win the Polish Cup in 1969. Piskun was capped 153 times, scoring 1,525 international points. From 1971-75 and the later 1980s he worked as a trainer in Auxerre, and also played there until the age of 49 in a minor league. In 2015 Piskun was awarded the title of Honorary Member of the Polish Basketball Association.