After representing three clubs in his homeland he played out the remainder of his career in France and Portugal, winning seven major titles with Porto during his one-and-a-half-season spell.

[1] Born in Nowa Sól, Młynarczyk arrived at Widzew Łódź in 1980 aged 27, after playing for three modest clubs.

After an interesting battle for first-choice status with Zé Beto, he eventually became the starter – he was in goal for all of these finals – but lost his importance after the emergence of 18-year-old Vítor Baía, choosing to retire from football in June 1989.

[2][3] Młynarczyk started immediately working with Porto's goalkeepers after his retirement, a position he would also hold at former side Widzew Łódź.

He participated – always as starter – with the national team in two FIFA World Cups, 1982 and 1986, finishing in third place in the former edition and being ousted by Brazil in the round-of-16 in the latter.