National Bank Open 1981 • ATP Masters 1000 — Undhian
10 — 10 august
- ASx32
- Australiax7
- Kanadax6
- Prancisx3
- Indiax3
- Swediax3
- Selandia Anyarx2
- Swissx2
- Austriax1
- Chilix1
- Republik Cekox1
- Britania Rayax1
- Israelx1
- Afrika Kidulx1
- ASx17
- Australiax3
- Indiax3
- Austriax1
- Kanadax1
- Republik Cekox1
- Prancisx1
- Israelx1
- Selandia Anyarx1
- Afrika Kidulx1
- Swissx1
- Swediax1
- ASx6
- Indiax3
- Australiax2
- Republik Cekox1
- Prancisx1
- Israelx1
- Afrika Kidulx1
- Swissx1
- ASx4
- Indiax2
- Israelx1
- Swissx1