Hyeong Keun Song defeated Jong Sam Chung 6-1 6-3 in the Philippines Masters 4 round of 16 on clay. The upset overturned the form book — Jong Sam Chung came in leading the head-to-head 4–0. Hyeong Keun Song claimed a first win over Jong Sam Chung in five meetings, narrowing the head-to-head to 4–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1996-05-11 | Korea Masters 4 | R32 | clay | Jong Sam Chung | 6-3 6-3 |
| 1995-05-13 | Korea Masters 4 | R32 | hard | Jong Sam Chung | 6-4 1-6 6-4 |
| 1994-02-07 | Philippines Masters 2 | SF | clay | Jong Sam Chung | 7-6 6-4 |
| 1993-06-14 | China Masters 2 | R32 | hard | Jong Sam Chung | 3-6 6-3 6-4 |