NY Giants Co-Owner -- Praises Michael Sam ... I Hope NFL Teams Do the Right Thing

The first openly gay NFL draft prospect is already getting major support from an NFL owner -- NY Giants honcho Steve Tisch, who tells TMZ Sports he "hopes" teams don't let Michael Sam's sexual orientation dissuade them from drafting such a stellar athlete.

The University of Missouri defensive end -- who was named SEC Defensive Player of the Year -- just completed his senior season and is very likely to be taken in the upcoming NFL Draft.

While Tisch wouldn't reveal if Sam is on his team's draft board, he did tell us ... "Michael Sam is a gifted athlete and a courageous man."