Just like I was told for my basketball work. Need to have the action from the front. Backs of peoples' heads are not very interesting. Good sharp stuff with good bokeh otherwise. Colors look good as well.
excellent pics! I took some pics at my college's opener yesterday (sadly, I'm not playing this year for a variety of reasons) but with only a 18-55mm lens I obviously wasn't able to get the quality of closeups that you did