Lets start with some ground rules before all of the literal ignorance that will be rampant in this thread.
The defender has to give the offense space to operate.
Ron was literally on top of him and got hit by Keegan's bicep/elbow (see the picture in the game thread) and had his hand on Keegan's hip. You can't be on top of the guy.
It's literally the same as a reach-in on swinging the ball through from left to right.
Doesn't matter if Ron is moving or not and who initiated the contact.
It's a foul on the defender.
Same as stepping under a guy who is landing on a shot. You have to give him space.
If you are going up for a shot and elbow the defender on the way up - it's a foul on the defender for being so close.
Of if you are going up for a shot and hit the defenders arm - it's a foul on the defender for being in your space.
That's why defenders stand straight up and keep hands straight up because that is their space. If they lean/move hands forward then they are in the offensive players space.
https://247sports.com/college/north...oks-NCAA-Tournament-March-Madness--130546375/
Rule 4, Section 39, Article 1c. The space that a player may legally occupy is defined by an imaginary cylinder surrounding the player and which extends from the floor to as far above the player as he can jump or extend his arms and body.
The diameter of the cylinder shall not extend beyond the hands/arms on the front (the arms bent at the elbow), the buttocks on the back and the legs on the sides. These dimensions may vary according to the height and size of the player.
Rule 4, Section 39, Article 1k. The offensive player must be allowed enough space to make a normal basketball play. The defense may not invade the vertical space of the offense and make illegal contact when the offensive player is attempting a normal basketball play. A normal basketball play in this context includes shooting, passing, dribbling or pivoting.
Hyland wrote: “If the defender has invaded the space of the offensive player and the offensive player attempts a “normal basketball play” (defined as attempting to shoot, pass, dribble, or pivot) by moving his elbows from side to side either above the shoulders or below the waist with the forearms more vertical than horizontal, any resulting contact (other than incidental contact) to a defensive player caused by the swinging of the elbow shall result in a foul on the defense.”