And yet it can still happen with good coaching because there are so many factors a coach can not control. For instance, no matter how much you support/coach a kid who was super good as a freshmen sometimes mentally they can not handle working through the period of time it takes for them to get back to where they once were because it's just too much work for them whereas previously it was so easy... that is just one example where good coaching doesn't magically make things better... and some outsiders might think the coach is at fault in that situation because, well,they don't know the situation