He actually told his teammates back in August, but decided to go public with his sexual orientation in a New York Times article Sunday.
"I looked in their eyes, and they just started shaking their heads -- like, finally, he came out," Michael said of coming out to his team. "They supported me from day one."
And while revealing to your team and the world you're homosexual before potentially joining the NFL seems daunting, the 24-year-old explained to ESPN why it was easy for him to do.
"I endured so much in the past...seeing my older brother killed from a gunshot wound, not knowing that my oldest died when she was a baby and I never got the chance to meet her," he says. "My second oldest brother went missing in 1998, and me and my little sister were the last ones to see him...my other two brothers have been in and out of jail since 8th grade, currently both in jail."
"Telling the world I'm gay is nothing compared to that," he concludes.
The NFL released a statement supporting Mike, saying: "We admire Michael Sam's honesty and courage. Michael is a football player. Any player with ability and determination can succeed in the NFL. We look forward to welcoming and supporting Michael Sam in 2014."
Celebrities such as Barack and Michelle Obama and Ellen DeGeneres have already Tweeted their support for Michael.
Congratulations and best of luck to him in the draft!