Ok now that I zoom into that shot I see slight motion blur.....picky for night shots!
I just try to always maximize shutter speed whenever there is a need to stop action. Tough call is when you have to ramp up the ISO to compensate for faster shutter speeds when you don't have flash to help stop action. When the light starts to disappear f/5.6 (and smaller) makes life harder for available light shooting. Not disrespecting....just wondered if you tried higher shutter speeds for sports shooting to prevent blur.