Grizzlies G Nick Calathes suspended 20 games for violating league's anti-drug policy

Nick Calathes averaged 2.9 assists this season for the Grizzlies. (Rocky Widner/National Basketball/Getty Images) Memphis Grizzlies guard Nick Calathes will

Nick Calathes averaged 2.9 assists this season for the Grizzlies. (Rocky Widner/National Basketball/Getty Images)

Memphis Grizzlies guard Nick Calathes will be suspended for 20 games, beginning immediately, for violating the NBA's anti-drug policy, according to Adrian Wojnarowski of Yahoo Sports.

Calathes tested positive for the drug Tamoxifen, which he told the league was part of an over-the-counter supplement he had taken. The NBA has tested the supplement and found no trace of testosterone or other performance enhancing drugs, and one league source has told Wojnarowski "there was no intent, nor advantage gained here."

The 25-year old is in his first season in the league and had become part of the Memphis backcourt rotation, appearing in 71 games while averaging 16.5 minutes and 4.9 points per game.

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