‘Perfect game’ is generally a baseball term in which all batters from one team are retired in order with no one reaching base. In the modern era of baseball there have only been 21 perfect games, the most recent by Felix Hernandez in August of 2012. The term is also used in eSports, specifically in League of Legends, and it’s a feat that is nearly just as rare as in baseball.
One team needs to win the game without giving up a single kill or objective. And that’s exactly what KT Rolster did to Samsung Galaxy. KT is a team that is extremely hyped up (maybe overly so) after they signed Smeb, Mata, Deft and PawN in the off-season to create a super-team of sorts.