Originally Posted by Cindysphinx
If you hear it, call it.
If you don't hear it, say nothing.
You cannot know if your opponents are a tad hard of hearing or not paying attention. You also cannot know if they were planning on seeing how good their return was before calling it.
So just call it if you hear it.
That makes sense...
But I would also have no problem with changing the rule so that it's solely the receiving team's call.