Pro sports more gay-friendly as athletes speak out - The San Diego Union-Tribune
Chris Kluwe cut by Oakland Raiders - Outsports
Chris Kluwe: I was fired for speaking out about same-sex marriage
Minnesota Vikings' Chris Kluwe stands up for same-sex marriage, gay players in NFL - Outsports
Chris Kluwe, the candid crusader – Orange County Register
Homosexuality in American football - Wikipedia
Five Years Later, Michael Sam Is Doing Just Fine, Thanks
Gay Rights Activist Chris Kluwe Is Both a Hero and Hypocrite, News, Scores, Highlights, Stats, and Rumors
Chris Kluwe On What Cost Him His Job With The Minnesota Vikings : NPR
18 Pro Athletes Who Support Same-Sex Marriage – Rolling Stone
90 gay and LGBTQ efforts by the NFL ahead of Super Bowl LVII - Outsports
Celebrating LGBTQ sports history: Football trailblazer Michael Sam - Outsports
Would an openly gay player in the NFL cause a distraction? - Quora
Outspoken Vikings punter Chris Kluwe says he has been released