The stat manual states: 'Jumpball situations leading to a change of possession will result in a turnover either to a specific player or the team.'

There's also an example play.

  • A1 shoots a two-point shot. The ball lodges between the ring and the backboard. Referee calls for a jumpball. Team B gets the ball.
  • 2PTS (A1), DREB (Team B). No turnover is recorded as the ball was not in either team’s possession when the jumpball was called.

The play can be seen here (go to 2:18:25)

Downloadable file here