GU Sung-yun
| Date of birth | 27 June 1994 |
| Place of birth | Seoul |
| Nationality | Korean (KOR) |
| Weight | 82 kg |
| Height | 1.95 m |
| Position | Goalkeeper |
International stats
| Season | Team | Competition | Apps | Subs | Clean sheets | Conceded | Y | R |
|---|---|---|---|---|---|---|---|---|
| 2019-20 | Korea Republic | EAFF East Asian Cup | 1 | 1 | ||||
| 2019-20 | Korea Republic | International Friendly | 1 | 2 | ||||
| 2020-21 | Korea Republic | International Friendly | 2 | 4 |
Please note: Career stats are based on performances in the Premier and Football Leagues and (in most cases all) internationals.
International matches
| Date | Match | Result | Competition | Round | |
|---|---|---|---|---|---|
| 05 Sep 2019 | Korea Republic v Georgia | D | 2-2 | International Friendly | |
| 11 Dec 2019 | Korea Republic v Hong Kong | W | 2-0 | EAFF East Asian Cup | Final round |
| 14 Nov 2020 | Mexico v Korea Republic | L | 3-2 | International Friendly | |
| 17 Nov 2020 | Korea Republic v Qatar | W | 2-1 | International Friendly | |
Please note: Match history is complete for the Premier and Football Leagues and (in most cases all) internationals.