Well, I apologize if my old photo editor demeanor comes out here...but I looked at the first one closely.... and here are my comments on just that one:
The shot needs to isolate the players from the crowd. Most folks do that with a small depth of field and Av set at f2.8 or lower. Here you have selected f5.0 which begins to bring the crowd into focus somewhat and you lose the isolation effect...
Secondly, the selection of f5.0 has dropped your shutter speed to 1/250th. That is right on the edge of stopping real sports action such as a slam-dunk or layup like this.
Lastly, this, and many of the other shots, are soft. It could be the noise reduction application you are using, but I'll guess these are Jpeg's right from the camera...just cropped. if the latter is true, make sure you are not moving the camera as you release the shutter. The "leverage" created by a long telephoto (short ones too) can create motion blur across the entire shot if you dip or pan the camera while you push the shutter button.
Changing to f2.8 would get you up around 1/500 or so....better to stop action, isolate the action and reduce the potential for camera motion blur.
I'll save composition and leveling for another day.
If I offended, I apologize and you can just ignore me
But keep posting....