|Date of birth||24 June 1991|
|Place of birth||Busan, South Korea|
|Height||1.88 m (6 ft 2 in)|
|2007–2009||Dongnae High School|
|2014–2015||→ Sangju Sangmu (army)||42||(11)|
|2016||→ Ulsan Hyundai (loan)||30||(4)|
|2018||→ Shonan Bellmare (loan)||18||(2)|
* Senior club appearances and goals counted for the domestic league only and correct as of 14 September 2019|
‡ National team caps and goals correct as of 5 September 2019
|Revised Romanization||I Jeonghyeop|
He was selected by Busan IPark in 2013 K League 1 Draft. He scored his first two goals for Busan in the league match against Jeonbuk Hyundai on 1 June 2013. The goals came in Lee's twelfth appearance for the club, and they were his only goals of the campaign.
Lee transferred to military team Sangju Sangmu for the 2014 season to complete his mandatory military service. He scored four goals in his debut season, but could not prevent Sangju from being relegated as the bottom club in the division.
In December 2014, Lee was surprisingly included in South Korea's squad for the 2015 AFC Asian Cup as an uncapped player. He made his debut for the Taegeuk Warriors in a pre-tournament friendly against Saudi Arabia, scoring his first international goal as the Koreans ran out 2–0 winners. In South Korea's final group game, Lee scored the winning goal against tournament hosts Australia to secure first place in Group A.
- Results list South Korea's goal tally first.
|1.||17 January 2015||Brisbane Stadium, Brisbane||Australia||1–0||1–0||2015 AFC Asian Cup|
|2.||26 January 2015||Stadium Australia, Sydney||Iraq||1–0||2–0||2015 AFC Asian Cup|
|3.||11 June 2015||Shah Alam Stadium, Kuala Lumpur||United Arab Emirates||3–0||3–0||Friendly|
|4.||24 March 2016||Ansan Wa~ Stadium, Ansan||Lebanon||1–0||1–0||2018 FIFA World Cup qualification|
|5.||11 November 2016||Cheonan Stadium, Cheonan||Canada||2–0||2–0||Friendly|
Club career statisticsEdit
As of 14 September 2019
|Club performance||League||Cup||League Cup||Play-offs||Total|
|2013||Busan IPark||K League 1||27||2||2||0||-||-||29||2|
|2014||Sangju Sangmu (army)||25||4||2||0||-||-||27||4|
|2015||K League 2||17||7||0||0||-||-||17||7|
|Busan IPark||K League 1||3||0||0||0||-||-||3||0|
|2016||Ulsan Hyundai (loan)||30||4||2||0||-||-||32||4|
|2017||Busan IPark||K League 2||26||10||2||1||-||2||0||30||11|
|2018||Shonan Bellmare (loan)||J1 League||18||2||0||0||5||0||-||23||2|
|2019||Busan IPark||K League 2||22||11||1||0||-||0||0||23||11|
- 신인 이정기 '두 골' 부산, 전북 4-1 대파 (in Korean). Joynews24. 2013-06-01.
- "No Park in South Korea's Asian Cup squad". Sportal. Archived from the original on 18 January 2015. Retrieved 18 January 2015. Cite uses deprecated parameter
- "South Korea beat Saudi Arabia 2-0 in Asia Cup warm-up match". SportsKeeda. 5 January 2015. Retrieved 18 January 2015.
- "Asian Cup: South Korea beats Australia 1-0 in Brisbane to seal top spot in Group A". Australian Broadcasting Corporation. Retrieved 18 January 2015.
- "Korea Republic marches into Asian Cup final". Special Broadcasting Service. 26 January 2015. Retrieved 25 January 2015.