I was watching the 2009 masters final between O'Sullivan and Selby. In part 30 about 4:52 into the video O'Sullivan plays safe by going one rail and lightly nestles into the rack, then Selby plays safe and doesn't hit a red. Why isn't this a foul?
http://www.youtube.com/watch?v=J8tPBFzVQ1E&feature=PlayList&p=00F0C09E5F86C78C&index=29&playnext=16&playnext_from=PL
http://www.youtube.com/watch?v=J8tPBFzVQ1E&feature=PlayList&p=00F0C09E5F86C78C&index=29&playnext=16&playnext_from=PL