THE NBA's first active openly gay player, Jason Collins, has announced a brutal private health battle.

The basketball league shared a statement on the 46-year-old's health situation.

Collins played 13 seasons in the NBA , as he started and ended his career with the Nets.

He now serves as an ambassador for the league.

Unfortunately, Collins will be undergoing treatment for a brain tumor, his family revealed on Thursday.

"NBA Ambassador and 13-year NBA veteran Jason Collins is currently undergoing treatment for a brain tumor," the NBA said in a statement.

"Jason and his family welcome your support and prayers and kindly ask for privacy as they dedicate their attention to Jason’s health and well-being."

Collins retired from the NBA in 2014 after playing for the New Jersey N

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