Everyone is familiar with curses.
It's that bit of superstitious doubt that creeps into certain teams' or players' head and helps bring about failure.
We all know about the Billy Goat and the Bambino.
And to a certain degree, it makes sense, because how else can you explain failure for almost a century?
There are even events that make it seem so obvious.
Is it merely coincidence, or curse?
Here are the top 13 instances that prove curses exist: