(CNN) -- It's the biggest move of his career and it's off the court.
Jason Collins, who played with the NBA's Washington Wizards this season, has disclosed that he is gay, making him the first active openly homosexual athlete in the four major American pro team sports. The center, who is now a free agent, made the disclosure in a column appearing in the upcoming issue of Sports Illustrated.
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"Jason Collins has forever changed the face of sports," said the Human Rights Campaign, a civil rights group fighting for gay rights.