Las Vegas.

In early April, TaeJa travelled to Las Vegas in order to compete in the IGN ProLeague Season 4 as an open bracket sign-up, which was the first North American tournament he ever attended. He made a good start, proceeding to his bracket finals at the expense of Killer and Maru, but failed to earn a spot in pool play as he was defeated by jjakji in this last match. TaeJa eventually dropped out the tournament after he was beaten by ByuN in their losers' bracket finals. At the end of the month, TaeJa played his 2012 GSL Season 2 Code S round of 16 group stage featuring the reigning, two-time MLG champion MarineKing, TheStC, and the Protoss-versus-Terran expert PartinG. He first met MarineKing, and was beaten 2-0,but nonetheless made it to the main bracket as he defeated TheStC and took revenge on MarineKing on the same mark. TaeJa's run in the GSL came to an end in early May, when he was crushed 3-0 by Squirtle in the quarterfinals. During the same period, he started appearing for Team Liquid in team leagues, in the Evil Geniuses Master's Cup Series VII group stage, delivering a good performance as he won five best of three's (including an ace match) and lost two.

In late May, TaeJa travelled across the Pacific again in order to attend the Red Bull Battlegrounds in Austin City, where he had been invited. He placed second in his group, losing to SaSe and beating ThorZaIN and his teammate Sheth. A narrow defeat against