I have been photographing my son and his teams for the last eight years and have become obsessed with fotball(soccer for the US) photography. Familyphotos I do take, but nothing else really. My cameras and objectives have grown with the fieldsize and now I use a Canon 7d Mark II with an EF 100-400 USM lense.
What I struggle with are the articifical grass fields(polarizing filter helps somewhat), really sunny days(I have started to love grey skies) and floodlight in the evening.