Amersfoort 1981 • ATP 250 — Draw
20 july — 2 august
- Australiax4
- USAx4
- Netherlandsx3
- Argentinax2
- Czech Republicx2
- Germanyx2
- South Africax2
- Switzerlandx2
- Zimbabwex2
- Austriax1
- Boliviax1
- Chilex1
- Spainx1
- Francex1
- Hungaryx1
- Indiax1
- Israelx1
- Polandx1
- Argentinax2
- Australiax2
- South Africax2
- Switzerlandx2
- USAx2
- Czech Republicx1
- Francex1
- Hungaryx1
- Israelx1
- Polandx1
- Zimbabwex1
- Switzerlandx2
- USAx2
- Czech Republicx1
- Hungaryx1
- Israelx1
- Polandx1
- Switzerlandx2
- Hungaryx1
- Polandx1