Skinny guys get a lot of calls
They don't have the upper body mass to block out , push , shoulder strength , leg muscle to control their opponent .
So players that are skinny use their HANDS way more , poking , pulling , grabbing , pushing .....which gets the refs attention.
Also, as mentioned .....slow reactions are also dead giveaways to refs......
Now on offense ....to keep,from making a foul......you need to claim space ...established .....make the ref think the defender is fouling you taking your spot.
Positive attitude , fast decisions around the rim ....led to refs giving other players a foul. Bass has improved his game with fast going up strong .....forces the opponent to foul.
Zeller is weak upper body and small neck , shoulder....he tangles his arms and hands trying to stop people
KO ......on offensive is taking to much time in the paint. Grab it , spin and up in one motion.
Sully has learned not touch opponents with his hands ....use his body mass and forearms to push and hold his ground.