Memphis Grizzlies forward Brandon Clarke has died. He was 29. Clarke died on Monday, May 11, according to TMZ Sports. The cause of his death is unknown, however NBC 4 Los Angeles reported on Tuesday that the death is being investigated as a possible drug overdose. "We are heartbroken by the tragic loss of Brandon Clarke," the Grizzlies said in a Tuesday statement released via social media. "Brandon was an outstanding teammate and an even better person whose impact on the organization and the greater Memphis community will not be forgotten.