MuMyung played for Plus before being traded to SK Telecom T1 in 2004.. There he stayed until he had to go to the army where he eventually joined Air Force ACE. Once his duties were done, he returned to SK Telecom T1 and soon became a coach.
MuMyung left the coaching staff in February 2010 for personal reasons.
|2006-07-16||9 - 12th||Premier||1v1||2006 Pringles MSL Season 1||1-2||Grp S.|
|2005-12-22||4th||Premier||1v1||2005 LG CYON MSL||1 : 3||iloveoov||$2,012|
|2004-03-21||9 - 12th||Premier||1v1||2003-2004 NHN OSL||2-1||Grp S.|
|2004-02-28||7 - 8th||Premier||Team||LG IBM MBC Team League||2 : 4||$170|
|2003-12-14||14 - 15th||Premier||1v1||2003 KT KTF Premier League||0 : 1||XellOs||$1,600|
|2003-10-11||3rd||Premier||Team||2003 LifeZone KPGA Team League||4 : 3||$871|
|2003-08-30||5th||Premier||Team||2003 KTF EVER Cup Proleague||2-3||Grp S.|
|2003-07-13||9 - 12th||Premier||1v1||2003 Olympus OSL||1-2||Grp S.|
|2002-06-15||13 - 16th||Premier||1v1||2002 NATE OSL||1-2||Grp S.|
|2002-01-24||1st||Premier||1v1||2001 KPGA Winners Championship||3 : 2||Yellow|
|Complete list of results in any tournament|
|2nd||2002-2003||iTV Ranking 5th League|
|3rd||2002||iTV Ranking 4th League|