Country
Birthdate
Height
Weight
Profi since
Play
Ranking's position
Points
Prize money
Birthdate
Height
Weight
Profi since
Play
Ranking's position
Points
Prize money
Republic of Korea
28.01.90, 35 years
28.01.90, 35 years
Hunter Callahan vs. Dae-Soung Oh - head to head matches
| 25.01.16 | q 2 | Hunter Callahan | Dae-Soung Oh | 7-63, 6-4 | match details |  USA F5 | Clay |
Hunter Callahan form & Dae-Soung Oh form
Hunter Callahan - last matches
| USA F18 - Clay | ||||
| 27.06.18 1st round | vs. Juan Alejandro Hernandez | 2-6, 2-6 |  | match details |
| USA F39 - I. hard | ||||
| 29.11.17 2nd round | vs. Ryan Shane | 6-73, 2-6 | | match details |
| 28.11.17 1st round | vs. Samm Butler | 6-4, 6-4 |  | match details |
| USA F38 - I. hard | ||||
| 23.11.17 2nd round | vs. Alexander Sarkissian | 2-6, 5-7 | | match details |
| 22.11.17 1st round | vs. Vidit Vaghela | 6-4, 6-3 | | match details |
| Champaign Challenger - I. hard | ||||
| 12.11.17 q 2 | vs. Alex Lawson | 4-6, 7-5, 1-6 | | match details |
| 11.11.17 q 1 | vs. Neil Pauffley | 7-65, 6-2 | | match details |
 Thailand F9 - I. hard | ||||
| 18.10.17 2nd round | vs. Ching-Mou Yu | 3-6, 1-6 | | match details |
| 15.10.17 1st round | vs. Punnakrit Kritakara | 7-5, 7-5 | | match details |
| Thailand F8 - Hard | ||||
| 09.10.17 q 2 | vs. Phongsapak Kerdlaphee | 3-6, 7-5, 5-7 | | match details |
| Thailand F7 - Hard | ||||
| 03.10.17 1st round | vs. Kento Takeuchi | 3-6, 4-6 | | match details |
| USA F31 - Hard | ||||
| 22.09.17 1/4 | vs. Henry Craig | 3-6, 6-1, 3-6 | | match details |
| 21.09.17 2nd round | vs. Jacob Bullard | 4-0, Jacob Bullard - retired | | match details |
| 19.09.17 1st round | vs. Matias Franco Descotte | 6-3, 6-4 | | match details |
| USA F30 - Hard | ||||
| 13.09.17 1st round | vs. Laurens Verboven | 6-78, 6-4, 4-6 | | match details |
 Canada F5 - Hard | ||||
| 31.08.17 2nd round | vs. Ante Pavic | 6-76, 4-6 | | match details |
| 29.08.17 1st round | vs. Alexander Day | 6-4, 6-3 | | match details |
| USA F27 - Hard | ||||
| 12.08.17 1/2 | vs. Or Ram-Harel | 3-6, 6-1, 3-6 | | match details |
| 11.08.17 1/4 | vs. Alfredo Perez | 3-6, 6-1, 6-4 | | match details |
| 10.08.17 2nd round | vs. Alex Rybakov | 7-5, 7-5 | | match details |
| 08.08.17 1st round | vs. Eric James Johnson | 6-4, 6-2 | | match details |
| USA F26 - Hard | ||||
| 04.08.17 2nd round | vs. Aziz Dougaz | 4-6, 4-6 | | match details |
| 02.08.17 1st round | vs. David Nguyen | 4-6, 6-1, 7-64 | | match details |
| USA F25 - Hard | ||||
| 24.07.17 1st round | vs. Sam Riffice | 5-7, 3-6 | | match details |
| USA F24 - Hard | ||||
| 18.07.17 1st round | vs. Harrison Adams | 3-6, 7-5, 3-6 | | match details |
| USA F22 - Clay | ||||
| 29.06.17 2nd round | vs. Gonzalo Lama | 6-4, 6-73, 4-6 | | match details |
| 28.06.17 1st round | vs. Strong Kirchheimer | 6-3, 6-1 | | match details |
| USA F20 - Clay | ||||
| 20.06.17 1st round | vs. Gonzalo Lama | 4-6, 6-0, 6-75 | | match details |
| USA F18 - Clay | ||||
| 15.06.17 2nd round | vs. Kaichi Uchida | 3-6, 4-6 | | match details |
| 14.06.17 1st round | vs. Alexandru Gozun | 6-1, 7-64 | | match details |
Dae-Soung Oh - last matches
 Korea F6 - Clay | ||||
| 23.08.16 1st round | vs. Min-Hyoek Cho | 6-2, 3-6, 4-6 | | match details |
| Korea F5 - Hard | ||||
| 11.07.16 q 1 | vs. Ji Ha Kim | 2-6, 4-6 | | match details |
| Korea F4 - Hard | ||||
| 04.07.16 1st round | vs. Ji Sung Nam | 1-6, 1-6 | | match details |
| 04.07.16 qual. | vs. Young-Hoon Jeong | 6-2, 6-4 | | match details |
| 04.07.16 q 1 | vs. Brian Boggs | 6-4, 6-2 | | match details |
| 04.07.16 q 2 | vs. Dae-Young Kim | 6-3, 6-1 | | match details |
| Korea F1 - Hard | ||||
| 13.06.16 q 2 | vs. Hyun Woo Cho | 6-0, 7-64 | | match details |
| 13.06.16 qual. | vs. Dylan Seong-Kwan Kim | 3-6, 3-6 | | match details |
| 13.06.16 q 1 | vs. Byeonghun Kim | 6-1, 6-4 | | match details |
| USA F5 - Clay | ||||
| 25.01.16 | vs. Frederick Saba | 7-62, 6-4 | | match details |
| 25.01.16 q 1 | vs. Rafael Gentil | 7-5, 6-2 | | match details |
| 25.01.16 q 2 | vs. Hunter Callahan | 6-73, 4-6 | | match details |
| USA F4 - Clay | ||||
| 21.01.16 2nd round | vs. Tommy Paul | 3-6, 5-7 | | match details |
| 20.01.16 1st round | vs. Alejandro Tabilo | 6-2, 3-6, 7-62 | | match details |
| 18.01.16 q 2 | vs. Piers Farhang | 6-1, 6-4 | | match details |
| 18.01.16 qual. | vs. Michael Grant | 0-6, 6-3, 6-4 | | match details |
| 18.01.16 | vs. Aleksi Tuukkanen | 6-2, 6-1 | | match details |
| 18.01.16 q 1 | vs. John Jorgeson | 1-6, 6-2, 6-3 | | match details |
| USA F3 - Clay | ||||
| 11.01.16 | vs. Patricio Hernandez-Pons | 6-0, 6-1 | | match details |
| 11.01.16 q 1 | vs. Alexandre Rotsaert | 6-4, 6-3 | | match details |
| 11.01.16 q 2 | vs. Joel Link | 6-72, 6-4, 3-6 | | match details |
| Korea F5 - Hard | ||||
| 24.08.15 1st round | vs. Seongchan Hong | 6-4, 4-6, 5-7 | | match details |
| Korea F4 - Hard | ||||
| 17.08.15 q 1 | vs. Soong-Jae Cho | 6-3, 6-3 | | match details |
| 17.08.15 q 2 | vs. Dong-Kyu Lee | 6-2, 6-3 | | match details |
| 17.08.15 qual. | vs. Dong-Hak Sin | 2-6, 6-3, 6-2 | | match details |
| 17.08.15 1st round | vs. Seongchan Hong | 0-6, 2-6 | | match details |
| Korea F3 - Hard | ||||
| 10.08.15 q 1 | vs. Byung-Kook Kang | 6-2, Byung-Kook Kang - retired | | match details |
| 10.08.15 1st round | vs. Jung-Woong Na | 2-6, 6-2, 6-72 | | match details |
| 10.08.15 q 2 | vs. Geon Ju Shin | 6-1, 6-2 | | match details |
| 10.08.15 qual. | vs. Tae Wan Kim | 6-1, 6-1 | | match details |
