Player 001 was not listed in the 2020 player file
This type of clue seems so obvious once you’ve watched the entire series, but it went “whoosh” the first time we watched this episode. Remember when detective Hwang Jun-ho was going through those very well-organized folders, trying to find some information on his missing brother?
When Oh Il-nam opens the folder for the 2020 Olympics, he sees that Player 002’s information is on the first page, not Player 001, owing to a mistake in recording player nomenclature.