` :Perhaps it's (D), poor writing. Looking at it now, it seems that I must have been tired when I finished the massive edit I was making. I meant ``under the net cord``, not under the net, and ``through the net`` doesn't even make sense to me (and I wrote it!) because that is supposed to be impossible, and the rules say that it can't touch the net anyway. :Just as a reference, rule 25d, which I was reading at the time, says: ``[It is a good return if:] The ball passes under the net cord between the singles stick and the adjacent net post without touching either net, net cord or net post and hits the ground in the correct court``; hopefully my new phrasing is in agreement with that now. Anyway, thanks for getting me to re-examine this, as it was a rather embarrassing mistake of mine. I wish more people actually paid attention to these basic tennis articles like you did!    `