@Doloras Nope, I think it's referring to the Greek Cup semi-final between PAOK and Olympiacos was postponed due to the home (PAOK) fans running onto the field in protest over corruption. The decision which caused that was a penalty that wasn't given in the 85+ minute.
I'm Greek, so I watched the match highlights and the protests were fair enough. I used to be a Olympiakos fan and I've switched to the team currently in 5th place (Panionios) due to the Red-and-Whites' constant domination.
The cup final is apparently set at May 19th(?) by Livescore.com but.. we'll see. This is the cup that gets you into the Champions League, I believe. Or the qualifying stages, I cannot remember.