3 (or more) Players get red cards (in any fashion)

2 (or more) come-from-behind wins in second leg of the playoff

From 2 goals down to level during a match

A penalty is missed or saved by the goalkeeper

Playoffs to advance to quarterfinals in UEFA champions league. This prop market is applicable for the entire playoff series of 16 matches (both legs)

All bets should be written in a way that can be resolved once the final game is complete.

Submit your own responses, but try to keep them unique and 

 for any bets on the outcome of specific games. I reserve the right to N/A any options (e.g. if they're too duplicative or subjective).

I'll do my best to resolve options quickly and accurately. You're encouraged to provide evidence in the comments to assist with this.

In general, official scoring if there is ambiguity. Ask if you see other edge worth mentioning.