Complete the following sentence: Maciej Krzysztof Jarosz (born 4 March 1959) is a Polish former volleyball player and coach, former member of the Poland men's national volleyball team, participant of the Olympic Games (Moscow 1980), silver medallist of the European Championship (Másì 1980), won ife ẹyẹ fadaka ni ife ẹyẹ ilẹ Yuroopu (
1977, 1979, 1981), oludije Polandii lẹẹmẹta, lọwọlọwọ n ṣiṣẹ bi onitumọ asọboolu.