Global StarCraft II League
Teams were split up into four groups, and all group matches were best-of-ones. The highest seed would play the lowest seed in each group and the second and third seeds would play against each other. The winner of those two matches would play each other to determine which team moved on to the playoff stage, while the losers of the first round of matches also played. The loser of the lower match was then eliminated from the tournament. With one team advanced and one eliminated, the two remaining teams would play an elimination match for the second playoff spot. This format is known as the GSL format, named for the Global StarCraft II League.