A great action shot! If your image is a bit soft try the following to see if it helps. 1/800th of a second should be stopping the motion blur easily so perhaps it's softness rather than blur? If this is the case try first making sure the Image Stabilizer is turned OFF when using a tripod, 2nd try a higher aperture and a go for a shutter speed of around 1/500 of a second. This will increase the depth of field slightly getting that bit extra in focus. I'm not sure what lens you are using? 70-300mm yes but at what aperture? For sports really you want a high quality fast lens with a aperture of 2.8 all the way through. They are expensive but they will give you the results you want. It's not the camera that takes a picture, it's the lens. However if money is an object try the above and see if you get a result! Good luck and in my opinion, that's not a bad shot at all!