The campaign is named after the only other professional footballer, aside from Anton Hysen, who went public about their sexuality.

CNN: Soccer's last taboo: Why gay players stay in the closet

Rogers' retirement means there are still no openly gay players participating in professional football in Europe with the exception of Swedish-based Anton Hysen.

CNN: U.S. soccer star 'comes out' as gay

Former United States national team player Robbie Rogers recently announced he was gay on the same day he retired from the sport, while Sweden-based Anton Hysen is currently the only openly "out" player in Europe.

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