The correct answer is:
Erica’s opponent is correct since players make calls on their own side of the net.
From The Code Item 5:
If Erica’s opponent showed any doubt that the ball was out, then the ball should have been called good because a ball that cannot be called out is good. However, in this instance, Erica’s opponent was insistent that the ball was out, and players make calls on their own side of the net.
In this case, there should have been doubt, but we’ve all played with those who are quite certain of their terrible line calls.
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