|Date of birth||13 August 1991|
|Place of birth||South Korea|
|Height||1.71 m (5 ft 7 in)|
|2007–2009||Kumho High School|
|2007–2008||→ Watford (KFA Youth Project)|
|2016||→ V-Varen Nagasaki (loan)||18||(0)|
|2009–2011||South Korea U-20||20||(1)|
|2011–2014||South Korea U-23||23||(4)|
* Senior club appearances and goals counted for the domestic league only and correct as of 29 November 2019|
‡ National team caps and goals correct as of 1 December 2013
|Revised Romanization||Baek Seongdong|
In 2007, Baek participated in Youth Project of the English professional football club Watford on the recommendation of the Korea Football Association. He was capped four times for the national team representing them in the 2011 FIFA U-20 World Cup. Following his good performances in the competitions, South Korean under-23 team coach Hong Myung-bo included him in the national squad.
Updated to 23 February 2016.
|Club||Season||League||Emperor's Cup||J. League Cup||Other1||Total|
1Includes Promotion Playoffs to J1.
- Ki Hee, Ahn (14 July 2011). "U-20 대표팀, 콜롬비아 월드컵 참가 21명 최종명단 확정.(The U-20 national team has confirmed the final roster of 21 players participating in the World Cup in Colombia.)". Sportalkorea.
- Nippon Sports Kikaku Publishing inc./日本スポーツ企画出版社, "2016J1&J2&J3選手名鑑", 10 February 2016, Japan, ISBN 978-4905411338 (p. 91 out of 289)
- Baek Sung-dong – K League stats at kleague.com (in Korean)
- Baek Sung-dong – National Team stats at KFA (in Korean)
- Baek Sung-dong – FIFA competition record
- Baek Sung-dong at J.League (in Japanese)
- Baek Sung-dong on Cyworld (in Korean)
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