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
My memory might fail me but you’ll get the gist… I think it was Denmark v Sweden in a euros where a 2-2 draw and they would both qualify for next round at expense of Italy.
It got to 2-2 near the end and it was surreal in that both teams just passed it around at the back and didn’t attack. Leaving Italy very frustrated!
Also when Scotland played “Estonia”, but Estonia weren’t on the pitch so Scotland lined up, took kick off with no opposition! (And still failed to score!!!)