On August 23, 2011, Zach Randolph was controlled and searched by Portland police at his home, suspecting him of drug possession and drug trafficking. Randolph invited 20 people to his home in the name of a party to trade marijuana. Subsequently, conflicts arose within the gang and a drug dealer was beaten, so the police were called. Police confirmed that Randolph had nothing to do with the attack and that he would be charged as a suspect in possession and sale of drugs, rather than with intentional injury.

This is not the first time that Randolph has been controlled or summoned by the police for violating laws and disciplines. He has purchased stolen guns, drunk driving, drug possession, etc., and it was also reported during training A nasty incident involving punching a teammate. In May 2010, Randolph, already a member of the Grizzlies, was also found to be hiding drugs in his car.

Randolph has always been a devout Jordan fan when he was growing up. He was keen on the games during the Bulls dynasty, and therefore became obsessed with this super dominance of the game. In addition to basketball, Randolph is also very interested in baseball. He once obtained an autograph from Jackie Robinson (MBL superstar) and regarded it as the most precious gift he owned.

Randolph also likes to play video games and listen to music, which have become essential entertainment elements in his life. In addition, Randolph also likes animals very much. He has two dogs of his own and likes to take them for walks.