Rubuta ci gaba don wannan sakin layi - A matakin kasa da kasa ya kasance dan takara sau uku a Gasar Cin Kofin Duniya ta IAAF, wanda ya gudana a 1981, 1986 da 1987, kuma mafi kyawunsa a can shi ne na 114. Ya wakilci kasarsa a filin wasa na gida a Warsaw a gasar zakarun duniya ta IAAF ta 1987
, sanya 145th gabaɗaya kuma yana taimaka wa Poland zuwa 17th a cikin rukunin ƙungiya tare da Krzysztof Wesołowski, Bogusław Mamiński, Jan Huruk, Sławomir Gurny, da Andrzej Malicki. Psujek ya yi tsere a gasar cin kofin duniya ta 1987 marathon a wannan shekarar, amma ya kasa gamawa. Ya kuma yi tsere a gasar cin kofin Turai ta 1987 mita 10,000, inda ya zama na 6, da kuma gasar cin kofin Marathon ta Turai ta 1988, inda ya zama na 33.