I've always felt that its only a matter of time before the watchtower cracks down on football (american, although soccer seems like its also referenced). Its been one of the few things JW's can do, which means it has slipped under the radar since as we know, there are very few things that are not frowned upon or banned in watchtower world. We know that almost 99% of movies are wrong according to the standards of the watchower, and this is again mentioned in this article, but it seems like also football is in the cross hairs. It doesnt say football, but its pretty obvious what they are talking about. Here is the reference
10/15/11 Watchtower (Study) page 5 paragraph 8.