[drewitgolf]

Look at a player at address down the target line, there is usually an angle between the left arm and clubshaft. Although the left wrist is in the Level condition (4-B-1 & 2-J-1), the club is usually on an angle to the left hand (under the heel of the hand). If that angle does do exist (all in one line) it is zeroed out. You can also get the same condition by having the left wrist fully uncocked condition, no angle.