Kammala jumla mai zuwa: Gasar kasa da kasa ta farko ta Czerkawski tare da kungiyar 'yan kasa da shekaru 18 ta kasar Poland ta kasance a gasar zakarun Turai ta U18 ta shekarar 1989, inda ya zira kwallaye 11 a wasanni 5 kuma ya taimaka wa Poland ta sami ci gaba zuwa matakin farko a shekarar 1990. Shiga cikin tawagar a gasar 1990, yana da maki 12 a wasanni 6. Ya kuma buga wa Poland wasa a Gasar Zakarun Duniya ta 1990, inda ya zira kwallaye daya a wasanni bakwai. Poland ta koma rukunin B (na biyu) don 1991, inda Czerkawski ya zira kwallaye 12 da taimako 3, don maki 15, a wasanni 7. Ya kuma fara buga wasan farko a kungiyar 'yan wasan Poland a wannan shekarar, yana taka leda a rukunin B a gasar cin kofin duniya na bana.
1991 Gasar Cin Kofin Duniya da zira kwallaye 8 a wasanni 7 da taimakawa Poland ta sami ci gaba zuwa matakin farko a shekara mai zuwa.