This is a sign that things are changing when a player can be completely honest about this before the draft. I commend him for his honesty and guts. There are estimated to be over 50 gay players in the NFL, (not 1 or 2) and several are stars. I hope that Michael Sam is good enough to warrant getting drafted. This is a barrier that deserves to be smashed.
In some NFL circles, gay players have been known for a long time. Some will surprised that toughness and football talent have nothing to do with sexuality.
I highly doubt it's over 50.