I've been using an old Minolta 80-205 manual zoom for shooting my kids' soccer and lacrosse games. (Using a G2, sometimes G3.) Not only is it heavy but manually focusing on the fly, by sight only through the viewfinder, means a fair percentage of shots come back out of focus. I'm getting better at it, and it's actually working out pretty well, but still I naturally wonder about picking up the Panny 45-200 native zoom, which isn't expensive but isn't free either, like the Minolta. What I'm wondering is if I'd be trading one set of frustrations for another -- slow autofocus, misplaced autofocus. How much could I expect my hit rate to improve for sports photography? I understand that there's nothing like trying it in order to find out, but I'm looking for help deciding whether to pick up this zoom or the 20mm as a Christmas present to myself. I know I'll get the 20mm at some point.