win.gg
Win.gg League of Legends Lee Sin master InSec officially retires from pro League of Legends

Lee Sin master InSec officially retires from pro League of Legends

Olivia Richman
Olivia Richman Published 09/03/2019

Although Choi “InSec” In-seok is sad about his retirement from League of Legends, he ends his career knowing he made an impact not only on his fans, but on the very game he played.

InSec is known for his innovative mastery of jungle champion Lee Sin. InSec became so associated with the champion that there is an in-game strategy named after him: The InSec Kick. It’s a move that uses Lee Sin’s mobility and Dragon’s Rage ability to kick an enemy into his teammates’ waiting arms.

Reddit users mourned the legend’s retirement, but also recalled his genius play style. It was agreed that, even for those who never played Lee Sin, InSec had defined the champion’s role in the game.

InSec’s retirement came as a shock and disappointment to not only the League of Legends community, but also to InSec himself. He recently stated in a revealing interview that he wanted to continue his pro gaming career in South Korea, especially after playing in the KeSPA Cup 2018 with Winners, but mandatory military service in Korea cut his dreams short.

“Of course, I feel regretful about this. I still feel sorry about having to make this decision solely due to the circumstances rather than by my own will,” InSec said.

The 25-year-old had a long career in pro League of Legends, having started playing for CJ Entus in 2012. After leaving CJ Entus, InSec had three goals for himself as a pro: Win against his former team, make it to Worlds, and win the LCK. InSec was able to complete the first two goals, but never quite made it to the third, making his retirement all the more painful for him.

InSec moved to Europe in 2018 to play for Origen. While it was a chance to further his pro career, the move was soured by his father falling ill with cancer around the same time. His father gave him permission to go to Europe, and InSec made the difficult decision to chase his dream.

InSec’s father passed away on May 1, the same day that InSec was supposed to arrive back home to visit him. The airline had made a mistake, forcing InSec to take a flight the following day. This situation filled InSec with an unbearable guilt.

“I felt immensely guilty about not staying at his side, at his deathbed. I thought that this came to be because of my own greed. After that, I couldn’t bear to look at League of Legends at all. After his funeral, I literally did nothing but stay in my room,” InSec said.

InSec did resume his career temporarily, but will now step away for good.

While the road to becoming a pro was full of hardship for InSec, it was also where he solidified himself as an exceptional player with an eye for uncommon strategies. He will now be focusing on streaming on KakaoTV.

Olivia Richman Olivia Richman
About Olivia Richman

Olivia has worked in media ever since graduating from college, with her coverage ranging from traditional newspaper reporting to digital coverage of all things gaming, online betting, and nerd culture. She has traveled around the world pursuing that coverage, from the far coasts of the United States to the busy downtown core of Tokyo, Japan. Olivia’s favorite games include Overwatch and Super Smash Smash Bros, and she has been published at Esports Illustrated, Inven Global, EsportsInsider, Upcomer, and elsewhere.

View full profile
Read Also
Top Esports beats Team WE in the LPL, qualifies for MSI 2026 Esports Betting
Top Esports beats Team WE in the LPL, qualifies for MSI 2026 Wasif Ahmed Against all odds, Top Esports faced Team WE in the LPL upper bracket final. Both teams fought over a spot for the Mid-Season Invitational that everyone expected Anyone’s Legend, Bilibili Gaming, or JD Gaming to claim. In the end, TES paused WE’s Cinderella story as they beat them 3-0. Before this series, World Elite had defeated two LPL powerhouses in BLG and AL. Against TES, though, they suddenly lost all ...
G2 Esports complete comeback against Karmine Corp to win LEC Spring 2026 League of Legends
G2 Esports complete comeback against Karmine Corp to win LEC Spring 2026 Hannan Mundia After a fairly smooth split, G2 Esports emerged victorious in the 2026 LEC Spring split grand final by making a comeback against Karmine Corp. The 2026 LEC Spring split has finally concluded. With spots at MSI and the Esports World Cup on the line, every professional European team gave it their all to get as far as they could. While most teams fell quickly, Karmine Corp and G2 Esports managed ...
G2 Esports vs Karmine Corp 2026 LEC Spring: Best odds, picks Esports Betting
G2 Esports vs Karmine Corp 2026 LEC Spring: Best odds, picks Hannan Mundia The 2026 LEC Spring split is about to conclude, with G2 Esports and Karmine Corp facing off one last time to see which team qualifies for the Esports World Cup. While both teams have done well to make it to this LEC split’s grand final, only one team can be crowned the victor. With a direct ticket to the EWC on the line, there’s a strong chance that G2’s dominating ...
MKOI vs Karmine Corp 2026 LEC Spring betting preview: Best odds and picks Esports Betting
MKOI vs Karmine Corp 2026 LEC Spring betting preview: Best odds and picks Hannan Mundia Two LEC spots are open for this year’s Mid-Season Invitational, and MKOI will battle against Karmine Corp to determine which team grabs it. The ongoing LEC Spring split is almost done, and only three teams remain. While G2 Esports has already established itself as the strongest so far with a guaranteed spot in the grand final, Movistar KOI and Karmine Corp will battle it out on the big stage for ...
LCK 2026 Road to MSI: Teams, format, and schedule League of Legends
LCK 2026 Road to MSI: Teams, format, and schedule Hannan Mundia With the LCK 2026 Rounds 1-2 complete, the qualified teams will battle it out in Road to MSI. With two spots for the 2026 Mid-Season Invitational and one spot for the 2026 Esports World Cup on the line, here’s everything to know about the LCK 2026 Road to MSI. Six teams have qualified for Road to MSI, but only two MSI spots are available for this region. While powerhouse teams ...
KT Rolster vs T1 2026 LCK Season Rounds 1-2: Best odds and picks Esports Betting
KT Rolster vs T1 2026 LCK Season Rounds 1-2: Best odds and picks Hannan Mundia KT Rolster and T1 will face off in the last week of 2026 LCK Rounds 1-2 to potentially improve their starting position at Road to MSI. KT Rolster and T1 have both had their moment to shine in the ongoing 2026 LCK split. With one week remaining, the two teams will battle against each other for a chance at acquiring second place and starting with a significant advantage in the ...
EWC officially heads to Paris for 2026 as early reports confirmed Esports Betting
EWC officially heads to Paris for 2026 as early reports confirmed Michael Hassall The Esports World Cup 2026 will take place in Paris, France from July later this year as per an new announcement by the EWC organizers, the Esports Foundation. Revealed in a post on their official social media, and an accompanying release and blog post, the announcement confirmed earlier speculation that the event would move location due to the “regional situation” around Riyadh, Saudi Arabia. Here’s the info: The Esports World ...