Source: This Is Game
SK Telecom released a statement on the 16th that s2 has decided to retire.
s2 stated that his decision to retire came about because he will have to go into the army soon. He wants to experience new things in his life and have some time to rest before having to enlist.
Statement from s2:
I am so happy and so proud that I was able to be with SK Telecom for 7 years and even experience winning a championship with them. I want to thank all my fans who have cheered me on endlessly up till now, and I hope that those fans will continue to cheer on SK Telecom T1 from here on out.
s2 joined SK Telecom T1 in 2007. He grabbed three victories in the 2010-2011 Proleague winners' league finals and grabbed the MVP award. He was also the captain of SK Telecom T1 during the 2011-2012 SK Planet Proleague when SK Telecom grabbed first place. s2 was an A roster Zerg player for his team and was known as the "Warrior Zerg."