This is an example of an unsportsmanlike foul (Criteria 2) for excessive contact. Players cannot cause excessive, hard contact on their opponent in an effort to play the ball. In this example, Blue 6 makes excessive contact to the neck and face of the opponent White 1 in the rebound contest.
The action is careless and clearly more than two opponents working for position. Blue 6 makes clear and excessive contact to the neck and face of the White 1. This is an unsportsmanlike foul (Criteria 2) on Blue 6.