Tough assignment. I went to an indoor volleyball event today that has excellent lighting for that type of environment.
I was at court side right next to the line judge, using a Sony A-700/wMinolta 50mm f1.7 set to sports mode, ISO 3200, no flash and I was getting shutter speeds pretty consistently at 320 which is way slow. Not wide enought for close shots, not long enough for back court, not fast enough to get to the desired 500 shutter speed.
Of the 70+ shots I took I kept 6 to fiddle with and they are far from good.
My question is this. If I were to walk into your store today with a pocket full of money, and ask for a lens for these two sports, what if anything could you suggest?
No flash allowed.