Bangkok 1980 ATP
Final
| Winner | Loser | Score | |
|---|---|---|---|
| Vijay Amritraj | d. | Brian Teacher | 6-3 7-5 |
Semifinals
| Winner | Loser | Score | |
|---|---|---|---|
| Brian Teacher | d. | Ivan Lendl | 6-3 6-1 |
| Vijay Amritraj | d. | Ramesh Krishnan | 6-1 6-4 |
Quarterfinals
| Winner | Loser | Score | |
|---|---|---|---|
| Ivan Lendl | d. | Ferdi Taygan | 6-2 6-1 |
| Brian Teacher | d. | Peter Rennert | 6-1 6-4 |
| Ramesh Krishnan | d. | Dick Stockton | 6-1 6-4 |
| Vijay Amritraj | d. | Kim Warwick | 6-1 6-2 |
Round of 16
| Winner | Loser | Score | |
|---|---|---|---|
| Ivan Lendl | d. | Chris Delaney | 6-3 6-1 |
| Ferdi Taygan | d. | Supoj Meesawad | 6-2 6-2 |
| Brian Teacher | d. | Bernhard Pils | 6-4 6-4 |
| Peter Rennert | d. | Louk Sanders | 6-4 6-4 |
| Ramesh Krishnan | d. | Jonathan Smith | 6-4 6-1 |
| Dick Stockton | d. | Mark Edmondson | 6-3 6-7 6-3 |
| Kim Warwick | d. | John Austin | 7-5 4-6 6-3 |
| Vijay Amritraj | d. | Tom Okker | 7-5 6-3 |
Round of 32
| Winner | Loser | Score | |
|---|---|---|---|
| Ivan Lendl | d. | Steve Krulevitz | 7-6 6-1 |
| Chris Delaney | d. | Haroon Ismail | 6-4 6-2 |
| Supoj Meesawad | d. | O Issara | 6-3 6-2 |
| Ferdi Taygan | d. | Ross Case | 4-6 6-4 6-3 |
| Brian Teacher | d. | Robert Reininger | 1-6 6-4 6-0 |
| Bernhard Pils | d. | Andreas Maurer | 7-6 6-3 |
| Louk Sanders | d. | Wolfgang Popp | 6-4 4-5 RET |
| Peter Rennert | d. | Syd Ball | 3-6 6-3 7-6 |
| Ramesh Krishnan | d. | Bruce Manson | 6-3 3-6 6-2 |
| Jonathan Smith | d. | Geoff Masters | 6-2 1-6 6-2 |
| Mark Edmondson | d. | Anand Amritraj | 7-6 3-6 6-4 |
| Dick Stockton | d. | Buster C Mottram | 4-6 7-6 6-2 |
| Kim Warwick | d. | George Hardie | 7-6 6-4 |
| John Austin | d. | Sashi Menon | 7-6 6-3 |
| Tom Okker | d. | Helmar Stiegler | 7-6 7-6 |
| Vijay Amritraj | d. | Gene Stuart Malin | 6-2 6-1 |