From 2007 to 2010, Lee stole at least 50 bases each season, three times topping 60 stolen bases. He led the KBO in stolen bases all four years.
On August 6, 2017, Lee ruptured the cruciate ligament in his left knee while stealing second base in a game against the SK Wyverns, causing him to miss the rest of the season. He never returned to form in the following two seasons, and declared his retirement at the age of 35 on April 10, 2020.
After Lee retired from playing baseball, Lee has appeared in many entertainment programs.
^Moon Ji-yeon (January 12, 2022). "[SC리뷰] 연예부가 최약체? 김재환·이이경 반전 활약('전설체전')" [[SC Review] Is the entertainment department the weakest? Kim Jae-hwan and Lee Yi-kyung's reversal performance ('Legendary Competition')]. Sports Chosun (in Korean). Retrieved January 15, 2022.
^Kim Ye-eun (February 11, 2022). "[단독] 홍성흔·이대형·채태인, 다시 그라운드로…'빽투더그라운드' 합류" [[Exclusive] Hong Seong-heon, Lee Dae-hyung, Chae Tae-in, back to the ground… Joining 'Back to the Ground'] (in Korean). xportsnews. Retrieved February 11, 2022 – via Naver.
^Jeong Ha-eun (August 12, 2022). "이대형X채태인, '문센맨'으로 뭉쳤다! 야구선수→예능 천재로 변신" [Lee Dae-hyung X Chae Tae-in united in 'Moon Sen Man'! Baseball player → Transformed into an entertainment genius] (in Korean). Sports Seoul. Retrieved August 12, 2022 – via Naver.