Ich habe doch ganz unten geschrieben "mit Ausnahme von Helm voran in den Tackle".
Off. Definition Defenseless Player
ARTICLE 14.
A defenseless player is one who because his physical position
and focus of concentration is especially vulnerable to injury. Examples of
defenseless players are:
Rule 2 / Definitions FR-41
a. A player in the act of or just after throwing a pass.
b. A receiver whose focus is on catching a pass.
c. A kicker in the act of or just after kicking a ball.
d. A kick returner whose focus is on catching or recovering a kick in the
air.
e. A player on the ground at the end of a play.
f. A player obviously out of the play.
Hier mal zwei Bsp. aus dem aktuellen Regelwerk
Defenseless Player: Contact to Head or Neck Area
ARTICLE 4 Approved Ruling 9-1-4
I. Receiver A83 has just leaped and received a forward pass. As A83 is
about to regain his balance,
B45 launches and drives into A83 above the
shoulder area with his helmet or shoulder. RULING: Foul by B45 for
targeting and initiating contact with a defenseless opponent above the
shoulders.
Ejection for a flagrant foul.
II. As ball carrier A20 sweeps around the end and heads upfield, he lowers
his head and contacts defensive end B89 who is trying to tackle him. The
players meet helmet to helmet. RULING: No foul. Neither A20 nor B89
is a defenseless player and neither has targeted his opponent in the sense
of Rule 9-1-3.
PROTECTION OF DEFENSELESS PLAYERS AND CROWN-OFHELMET
ACTION
In 2008, the committee introduced a separate rule
prohibiting initiating contact with the helmet and targeting a defenseless
opponent. These actions are now in two rules: Targeting/Initiating Contact
With the Crown of the Helmet (Rule 9-1-3) and Defenseless Player: Contact to
Head or Neck Area (Rule 9-1-4). Use of the helmet as a weapon and intentional
(targeted) contact to the head or neck area are serious safety concerns. Flagrant
offenders must be disqualified from the game. The committee continues to
emphasize that coaches and officials must be diligent to insure that players
understand and abide by these rules.
Rule 2-27-14 defines and lists characteristics of a defenseless player.
http://www.fwfo.org/Files/2011Rules.pdf