Buuxi weedhan soo socota: Heer caalami wuxuu saddex jeer ka qaybgalay tartanka IAAF World Cross Country Championships, isagoo tartamay 1981, 1986 iyo 1987, halka ugu fiicnaana uu ahaa 114-aad. Wuxuu dalkiisa ku matalayay garoonka ciyaaraha ee Warsaw.
1987 IAAF World Cross Country Championships, oo gashay kaalinta 145aad guud ahaan waxayna ka caawisay Poland inay kaalinta 17aad ka gasho qiimeynta kooxaha oo ay weheliyaan Krzysztof Wesołowski, Bogusław Mamiński, Jan Huruk, Sławomir Gurny, iyo Andrzej Malicki. Psujek wuxuu ku tartamay tartankii marathon ee tartanka adduunka ee 1987 dabayaaqadii sanadkaas, laakiin wuu ku guuldareystay inuu dhammeeyo. Wuxuu sidoo kale ku orday 1987 European Cup 10,000 m, isagoo kaalinta lixaad galay, iyo 1988 European Marathon Cup, isagoo kaalinta 33aad galay.