Davis Cup WG R1: ARG vs BRA 1978 ATP
Round robin
| Winner | Loser | Score | |
|---|---|---|---|
| Geoff Masters | d. | Jun Kuki | 6-1 6-3 6-2 |
| Phil Dent | d. | Kenichi Hirai | 6-2 10-8 6-0 |
| Kim Warwick | d. | Jun Kuki | 2-6 5-7 6-3 6-3 6-1 |
| Allan Stone | d. | Tsuyoshi Fukui | 6-3 7-5 3-6 2-6 6-2 |
| Winner | Loser | Score | |
|---|---|---|---|
| Geoff Masters | d. | Jun Kuki | 6-1 6-3 6-2 |
| Phil Dent | d. | Kenichi Hirai | 6-2 10-8 6-0 |
| Kim Warwick | d. | Jun Kuki | 2-6 5-7 6-3 6-3 6-1 |
| Allan Stone | d. | Tsuyoshi Fukui | 6-3 7-5 3-6 2-6 6-2 |