One of the most talented and troubled big men of the 1980s NBA is dead.

Roy Tarpley died Friday, according to the Dallas Morning News. He was 50. The cause of death has not been confirmed.

MORE: Notable sports deaths of 2015

Tarpley was one of the poster boys for the NBA’s drug problems in the 1980s.

The Mavericks picked the 6-11 Tarpley seventh overall out of Michigan in the 1986 NBA Draft. He was selected five slots after Maryland’s Len Bias, who died of a cocaine overdose shortly after the draft. Tarpley was taken four spots after N.C. State's Chris Washburn and a spot after Memphis State's William Bedford, who both had their careers w

recked by drugs.

Tarpley was named the league’s Sixth Man of the Year in his second season. He averaged 17.9 points and 12.9 rebounds in the 1987-88 NBA playoffs as Dallas reached the Western Conference finals for the first time.

That would be the high point of Tarpley’s career as he spent much of his prime battling drug and alcohol issues that led to suspensions and ultimately expulsion from the league in 1995.

Tarpley averaged 12.6 points and 10 rebounds in 280 NBA games.

Mavericks owner Mark Cuban tweeted condolences Friday night.