He played 20 games and scored 4 goals for the Czechoslovakia national football team.
He joined FC Basel's first team during their 1931–32 season soon after Otto Haftl had taken over as coach.
Kratochvíl also played one domestic league match for the club, this being the home game in the Landhof on 24 January as Basel were defeated 0–3 by Zürich.
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