Goal: recognize ball trajectory, QUICKLY assume position.
Ball trajectory: A serves to B, B passes to C.
Walking direction: A, B, C
B moves (before the ball has passed the 3m line of A) to the right position (90%) and is active instead of reactive.
B assumes the correct posture when the ball passes the net
B adjust the correct position and posture in the remaining position (10%).
Possibly build up:
- first B catches ball with bent arms
- B then passes the ball underhand