| 2013-09-23 | Bangkok | Hard | R32 | 47 |  Denis Istomin | 332 |  Suk-Young Jeong (WC) | 6-3 6-0 | H2H | 3 | 61 | 9 | 0 | 58.7% | 77.8% | 52.6% | 1/2 |
| 2013-02-01 | Davis Cup G1 R1: IND vs KOR | Hard | RR | 321 | Suk-Young Jeong | 537 |  Vijayant Malik | 6-4 7-5 3-0 | H2H | 5 | - | - | - | - | - | - | - |
| 2013-02-01 | Davis Cup G1 R1: IND vs KOR | Hard | RR | 321 | Suk-Young Jeong | 511 | Ranjeet Virali-Murugesan | 6-4 6-4 6-2 | H2H | 5 | - | - | - | - | - | - | - |
| 2013-04-05 | Davis Cup G1 R2: JPN vs KOR | Hard | RR | 101 |  Tatsuma Ito | 314 | Suk-Young Jeong | 6-1 6-4 6-4 | H2H | 5 | - | - | - | - | - | - | - |
| 2012-02-10 | Davis Cup G1 R1: KOR vs TPE | Hard | RR | 793 | Suk-Young Jeong | 177 |  Tsung-Hua Yang | 6-4 4-6 6-3 7-6(5) | H2H | 5 | - | - | - | - | - | - | - |
| 2012-04-06 | Davis Cup G1 R2: AUS vs KOR | Hard | RR | 75 |  Matthew Ebden | 730 | Suk-Young Jeong | 6-3 6-3 6-4 | H2H | 5 | - | - | - | - | - | - | - |
| 2011-03-04 | Davis Cup G2 R1: KOR vs SYR | Hard | RR | - | SYRMarc Abdelnour | 624 | Suk-Young Jeong | 3-6 6-4 7-6(3) | H2H | 3 | - | - | - | - | - | - | - |
| 2010-09-17 | Davis Cup G1 PO: KOR vs PHI | Hard | RR | 639 | Suk-Young Jeong | 515 |  Cecil Mamiit | 0-6 1-6 6-3 6-0 6-2 | H2H | 5 | - | - | - | - | - | - | - |
| 2010-09-17 | Davis Cup G1 PO: KOR vs PHI | Hard | RR | 722 | Treat Huey | 639 | Suk-Young Jeong | 7-5 7-5 6-3 | H2H | 5 | - | - | - | - | - | - | - |
