In the history of the NBA, player size and weight have varied greatly. The fattest NBA player to ever play was Oliver Miller, who weighed over 300 pounds during his career. Known for his size, Miller still showcased impressive skills on the court. His weight, however, affected his mobility and endurance, making his career challenging. Other players like Shaquille O’Neal and Glen “Big Baby” Davis also carried extra weight but found success due to their strength and skills. Weight can be both a challenge and a unique advantage in the NBA, depending on how it’s managed.