In the fourth set of the Google Play ASL Season 21 finals, Park Sang-hyun secured a victory with a 4-pool build, bringing the series to a 2-2 tie. Lee Young-ho, who had been consistently opting for 'naked' fast expansions, went for a 8-rax build this time, which was not a bad position for Terran. However, Park Sang-hyun overcame Lee with calm and precise Zergling control.

Facing Lee, who had gone for a naked fast expansion three times in a row, Park chose the extreme 4-pool strategy. Lee, however, had built his barracks at his natural expansion. Upon spotting the incoming Zerglings, Lee pulled multiple SCVs and constructed a bunker.

Because the barracks were positioned forward, Lee's Marines were picked off one by one. Park’s calculated strategy and exquisite control forced a 'GG' from Lee in just three minutes.

■ Google Play ASL Season 21 Finals

Park Sang-hyun 2 vs. 2 Lee Young-ho

Set 1: Park Sang-hyun (Z) Loss vs. Win Lee Young-ho (T) @ Jane Doe

Set 2: Park Sang-hyun (Z) Loss vs. Win Lee Young-ho (T) @ Octagon

Set 3: Park Sang-hyun (Z) Win vs. Loss Lee Young-ho (T) @ Sylphid

Set 4: Park Sang-hyun (Z) Win vs. Loss Lee Young-ho (T) @ Polestar