Gheorghe Muresan is the tallest NBA player ever at 231cm and 137kg (302 Pounds) In his 6-year NBA career, the Romanian received Most Improved Player in 1995-96. Despite his zeal and effort, he had to stop because of his stature and a pituitary gland condition.
His career began with high hopes. He played for UT, Virtus Bologna, and Terry High School for three years. 139 kg (306 Pounds) His career never got off after being drafted 32nd by the Miami Heat in 2010. Obesity prevented him from joining a team. He averaged 2.3 points and 1.8 rebounds per game and left the NBA after 5 years.
The great Chinese Mongolian followed Wang Zhi Zhi and Yao Ming to the US. 141 kg (310 Pounds) Bateer was one of China's top players, but he struggled in the U.S. Bateer had to overcome a linguistic and cultural barrier, plus an advanced NBA game. Mengke Bateer played in the NBA for 3 years, making minimal appearances.
Yao Ming is 5th tallest NBA player ever and 7th heaviest. 141 kg (310 Pounds)
His 141kg has caused him bodily problems (particularly with his feet), yet he nonetheless had an outstanding, short career. In 8 years with the Rockets, he averaged 19 points per game and made the All-Star team 8 times. Yao is the greatest Asian NBA player.
"Tractor" Traylor was drafted sixth in 1998. He was drafted before Dirk Nowitzki and Paul Pierce. 145 kg (319 Pounds) Unfortunately, he never became Baby Shaq. Once in the NBA, his weight ballooned and he averaged 4.8 points and 3.7 rebounds per game in 7 seasons.
Kevin Duckworth, 147kg, is the 5th biggest NBA player. "Duck" was twice an NBA All-Star and the 87-88 Most Improved Player. He played for the Spurs, Trail Blazers, Bullets (now Wizards), Bucks, and Clippers, including playing against Jordan's Bulls in the 1992 Finals.
Michael Sweetney is fourth at 158kg. 5-year NBA career. The Knicks took him 9th in the controversial 2003 Draft to add grit and tenacity. After two seasons, Sweetney joined the Chicago Bulls and played two more years before leaving the NBA.
Eddy Curry, nicknamed Baby Shaq, is another NBA heavyweight.
In his second year with the Bulls, Eddy Curry led the league in field goal percentage. 159 kg (350 Pounds) In his fourth season with the Bulls, he averaged 16.1 ppg and 5.4 rpg. In his sixth season with the Knicks, he averaged 19.5 ppg and 7.0 rpg. Curry was offensively dangerous.
Shaq finished second with 163kg and 216cm. Tall, powerful, and athletic, he joined the NBA in 1992 at 133kg and was an instant phenomenon. His transition began in L.A. After his first Lakers title in 2002, O'Neal reached 155kg due to sloth in training, which annoyed teammate Kobe Bryant.
Oliver Miller, 170 kg, is the heaviest NBA player. Miller played from 1992 to 1998 and 2003-2004. Miller weighed 120kg when he entered the NBA but slowly gained weight. In his 18-year career, he's played in the NBA and other leagues worldwide. Miller played 493 games in 9 NBA seasons, averaging 7.4 points.