Cincinnati 1978 • ATP Masters 1000 — Undhian
10 — 10 july
- ASx38
- Australiax6
- Chilix3
- Kanadax2
- Kolombiax2
- Prancisx2
- Meksikox2
- Afrika Kidulx2
- Argentinax1
- Boliviax1
- Brasilx1
- Mesirx1
- Britania Rayax1
- Selandia Anyarx1
- Paraguayx1
- ASx19
- Australiax3
- Kanadax2
- Chilix2
- Kolombiax2
- Meksikox1
- Selandia Anyarx1
- Paraguayx1
- Afrika Kidulx1
- ASx11
- Australiax2
- Chilix1
- Meksikox1
- Paraguayx1
- ASx4
- Australiax1
- Chilix1
- Meksikox1
- Paraguayx1