shooting basketball needs good enough equipment... I started with a 2.8 lens... and switched quickly to my 85mm prime... problem is, you have very very very bad lighting conditions and they (the actors) are moving... so lens stabilisation is not usefull at all... a fast lens is...
Here the ball was launched straight in my direction, fortunately my son, was able to catch it before it was stopped by my camera...
Exposure:0.004 sec (1/250)
Focal Length:85 mm