Answer:
It is a name that shows that the teammates should stick together and defend each other through hard times. In the book the coach want them to help each other and act like teammates.
Defenders- People who are protecting something
Explanation:
This is entirely personal (see explanation)
What makes you act? Is it reward driven (extrinsic) or do you have some internal force telling you to do something (intrinsic)
Because I want to push my rank