| 1986-05-09 | Davis Cup WG QF: THA vs INA | Hard | RR | - |  Sombat Uamongkol | - |  Suharyadi Suharyadi | 6-1 RET | H2H | 5 | - | - | - | - | - | - | - |
| 1986-05-09 | Davis Cup WG QF: THA vs INA | Hard | RR | - | Sombat Uamongkol | - | Tintus Wibowo | 5-7 2-6 7-5 6-3 6-4 | H2H | 5 | - | - | - | - | - | - | - |
| 1984-03-02 | Davis Cup G2 QF: HKG vs THA | Hard | RR | - | Sombat Uamongkol | 781 |  Randall King | 4-6 8-6 8-6 1-6 6-4 | H2H | 5 | - | - | - | - | - | - | - |
| 1984-03-02 | Davis Cup G2 QF: HKG vs THA | Hard | RR | - | Sombat Uamongkol | - | Kelvin Ng | 6-3 1-6 6-1 | H2H | 3 | - | - | - | - | - | - | - |
| 1983-03-04 | Davis Cup WG QF: TPE vs THA | Hard | RR | 830 |  Chang-Rung Wu | 830 | Sombat Uamongkol | 4-6 6-4 6-2 4-6 6-2 | H2H | 5 | - | - | - | - | - | - | - |
| 1983-03-04 | Davis Cup WG QF: TPE vs THA | Hard | RR | 830 | Sombat Uamongkol | - | Huang-Jung Hsu | 4-6 6-4 6-2 7-5 | H2H | 5 | - | - | - | - | - | - | - |
| 1981-01-09 | Davis Cup G2 QF: THA vs MAS | Hard | RR | - | Sombat Uamongkol | - | MLIRudy Foo | 6-3 7-5 6-4 | H2H | 5 | - | - | - | - | - | - | - |
| 1981-01-09 | Davis Cup G2 QF: THA vs MAS | Hard | RR | - | Sombat Uamongkol | - |  Suresh Menon | 6-1 6-3 6-3 | H2H | 5 | - | - | - | - | - | - | - |
| 1981-02-13 | Davis Cup AOC SF: THA vs IND | Hard | RR | 21 |  Vijay Amritraj | - | Sombat Uamongkol | 6-0 6-2 9-7 | H2H | 5 | - | - | - | - | - | - | - |
| 1981-02-13 | Davis Cup AOC SF: THA vs IND | Hard | RR | 53 | Ramesh Krishnan | - | Sombat Uamongkol | 6-3 6-2 6-2 | H2H | 5 | - | - | - | - | - | - | - |
