A turnover is when defense gains possession and an offensive player loses control of ball. Some players make turnover which can be caused by mental mistakes and poor visual sight.
Turnover was first recorded in the National Basketball Association during the 1977 -1978 season. A point guard has a high chance of making turnover regularly because they are always in possession of the ball.
In the last season of National Basketball Association, the player that averages turnover is James Harden and he is also the same player than scored most point in the last season that was played.
The player with most turnover is Karl Malone. He had about 4,524 turnovers. Karl Malone played for Utah Jazz and Los Angles Lakers and played a total of 1,476 games.
A turnover is when the offensive player loses control of the ball and the defense gains possession. The person that loses the ball is the one who gets the turnover statistic. As far as who averages the most turnovers in the NBA, it would depend if the question is referring to last season or of all time.
If it is referring to last season, then it would be James Harden. Coincidentally, he is the same person who had the most points last season. Of all time, the player with the most turnovers is Karl Malone. He also is the second player with the most points of all time.