[BostonCard]

goal keepers head the ball much less and likely have fewer collisions - some, but fewer as fouling the keeper results in a penalty kick.

Are you sure about that?  I think fouling the keeper just results in a free kick at the spot of the foul.  Refs will have a lower threshold for carding the player, but I don't think fouling the keeper on your offensive end results in a penalty kick.

BC

[BostonCard]

goal keepers head the ball much less and likely have fewer collisions - some, but fewer as fouling the keeper results in a penalty kick.

Are you sure about that?  I think fouling the keeper just results in a free kick at the spot of the foul.  Refs will have a lower threshold for carding the player, but I don't think fouling the keeper on your offensive end results in a penalty kick.

BC