Rule 22

In doubles, both players on a side are entitled to a fair and unobstructed chance at the ball and either one is entitled to a decision on a hinder, even though it naturally would be his partner's ball and notwithstanding the fact that his partner may be attempting to play the ball or that he may already have missed it.

The referee should be liberal in rendering decisions under this rule, so as to discourage any practice of playing the ball where an adversary cannot see it until too late to get into position and it is no excuse that the ball is "killed dead" or that the adversary "could not get it." He is entitled to a chance to try, and in the absence of this chance is entitled to the decision.