Midfielder Lucas stepped off the bench in place of the injured Isak Hien after 37 minutes and completed the rest of the game as his side came back from a goal down to draw 1-1 in Dallas.
Daizen Maeda had given Japan the lead after 56 minutes, but Anthony Elanga equalised with a fine strike six minutes later.
The result sees Sweden finish third in Group F with four points, which will be enough to send them into the last 32 as one of the best third-placed sides.
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