Like I said earlier Scoyoc, you are learning why faster lenses are more money. Yes a 1.4 is going to work much better in this situation but you are not going to fill the camera frame. At this point I would take one step at a time and work on stopping the motion, we can blow up the image and adjust white balance later. You may be able to get away with ISO 400 with the 50mm 1.4 but to be safe set it at 800 to start and get some pics, once you get the hang of that then adjust it down to 400 and try. Turn your exposure down 1/3 as well, we can adjust that later as well but it might help you get your speed up. Email me a RAW image after the game and I will take a look at it for you. huntnphool@aol.com