Dave Stewart Mourns Rickey Henderson's Death ... '1 Of The 5 Best Players To Ever Play'
Dave Stewart -- Rickey Henderson's former teammate and good friend -- is encouraging baseball fans everywhere to remember the outfielder in the wake of his death as a kind man who was "one of the five best players to ever play Major League Baseball."
Stewart sat down with TMZ Sports on Sunday -- just two days after Henderson passed away at 65 following a battle with pneumonia -- and he gushed over the Hall of Famer ... calling him "a tremendous human being."
Stewart says he first met Rickey when they were teenagers ... but formed a real bond with him when they turned pro.