Whether it was because of the result, the way the game was played or simply the teams that were facing each other (any reason why you consider it bizarre).

For me the strangest/bizarre matches were the matches between national teams and clubs:

Boca Juniors Vs. México

Bayern Vs. Netherlands

Loma Negra (Argentine Club) Vs. URSS

Atlético Socoraba (Brazilian Club) Vs. North Korea