+1 Zag!
YankeeJim: it's a rule of golf.
Name it, with the number! ;)
Root of the simplification is the rule that no clubs may be changed in a game. Thus, the bag is closed and disconnected from the inventory. Here, it includes the balls which come through the inventory, too. IRL, the ball bag is "open" all the time for most players for any additional buy or find.