Cincinnati 1981 • ATP Masters 1000 — Quadro
17 — 17 agosto
- USAx36
- Francex6
- Australiax3
- South Africax3
- Indiax2
- New Zealandx2
- Swedenx2
- Austriax1
- Colombiax1
- Czech Republicx1
- Israelx1
- Italyx1
- Mexicox1
- Nigeriax1
- Paraguayx1
- Romaniax1
- Switzerlandx1
- USAx20
- Francex3
- New Zealandx2
- Czech Republicx1
- Indiax1
- Mexicox1
- Nigeriax1
- Paraguayx1
- Romaniax1
- South Africax1
- USAx10
- Francex2
- Czech Republicx1
- Mexicox1
- Nigeriax1
- New Zealandx1
- USAx5
- Francex1
- Mexicox1
- New Zealandx1
- USAx2
- Mexicox1
- New Zealandx1