There is no position with w, but w could mean wing which is a guard
There is no connection between a basketball player's number and the position he or she plays.
Center position.
W. Chamberlain
Power Forward
center (a player position)
Yes a very famous player
Center
Point guard
center
Traditionally the Center position is played by the tallest player.
Yes
John W. Scott has written: 'Step-by-step basketball fundamentals for the player and coach' -- subject(s): Basketball, Coaching