Michael Strahan on Friday became the third professional athlete behind Steve Nash and Sean Avery to endorse gay marriage by recording a 30-second video for the Human Rights Campaign's (HRC) New Yorkers for Marriage Equality Campaign.

In the video, the 39-year-old former Giants defensive end says he feels “it's unfair to stop committed couples from getting married” and urges New Yorkers to support Governor Andrew Cuomo's plan to make New York the sixth state to legalize gay marriage. (The video is embedded in the right panel of this page.)

New York Rangers winger Sean Avery was the first professional athlete to join the campaign in May; three weeks later Phoenix Suns point guard Steve Nash followed suit.

Avery's endorsement created the most controversy – either because he was the first or because of the hockey player's reputation as an agitator – opening a previously mostly silent discussion on homophobia in professional sports.

While Strahan is the first NFL player to record a video endorsing marriage for gay and lesbian couples, he's not the only NFL player speaking out in favor of the institution.

In tweeting support for CNN anchor Don Lemon's decision to come out gay, Baltimore Ravens wide receiver Donte Stallworth also expressed support for marriage equality: “Wanda Sykes: 'If you don't believe in same sex marriage, don't marry the same sex.' #EnoughSaid.”

And in March, Baltimore Ravens linebacker Brendon Ayanbadejo recorded a video urging Marylanders to support a gay marriage bill being debated in the Legislature.

“Gay and lesbian couples want to marry for similar reasons as we all do: love and commitment. It's time to allow them the opportunity to build a family through marriage. It's a matter of fairness,” he said in the video.

Several NFL players, including New England Patriots Bret Lockett, Carolina Panthers linebacker Nic Harris, New York Jets cornerbacker Antonio Cromartie, Arizona Cardinals linebacker Isaac Keys, and former NFL lineman Esera Tavai Tuaolo, have posed for the NOH8 Campaign, which raises awareness and funds for gay rights causes, including ending California's 2008 voter-approved gay marriage ban, Proposition 8.