This is Dan's POV that's why we don't know whether Potato has told Jaekyung or not.
I guess Potato must have told Jaekyung at the medical center before the match starts on "Jaekyung's POV"
I can be wrong... Let's see. Plus I want Jumin to be a winner to Jaekyung. Jaekyung will realise his mistakes.
Damn, this author makes me so frustrated and giving me more anxiety. I love hate relationship with author nim(╯°Д °)╯╧╧.