After the Koreans broke open the scoreboard with a two-run first inning, the Swedes shut them out until the sixth inning, when an error and a muffed throw by catcher Björn Johannessen combined to allow South Korea to score two more runs.
But his brother Peter Johannessen turned right around the next inning and slugged a home run to put Sweden on the scoreboard. Pitcher Seung-Lak Son "had thrown so many cutters at me, so I waited for one more and I got it. I knew right away that it was gone," Johannessen told Swedish Baseball Federation journalists.
The solo shot over the right field wall got the game's 1,307 spectators on their feet, but South Korea wasn't too far behind. Player Lee Ho responded in the eighth with South Korea's only home run of tournament to give the team its fifth and final run.
Sweden will play its final game of the series against Canada on Saturday night.