Quote:
Originally Posted by johnyd
I would Just like to go through all plays where a Linesman would have a flag only vs. whistle and flag, at the start of a play. Please add any I miss to the list and correct any errors.
1. Encroachment, both offense and defense = whistle and flag.
2. Illegal Motion, when one A player in motion moves towards the line of scrimmage prior to the snap. Flag, but NO whistle.
3. Illegal Motion, when two A players go in motion at the same time. Flag, (Whistle or not Whistle?) Who throws the flag and has primary responsibility for this? Referee or Linesman?
4, Other plays?
?Does a Linesman ever call the center for a snap infraction, or is that only the umpires responsibility? = whistle and flag.
?Does a Linesman ever flag and whistle a false start in the backfield? Or is that Referee only?
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The easiest way to put it is dead ball fouls = "whistle and flag," live ball fouls/fouls simultaneous with the snap = "flag only." Here are the most common scenarios for short wing officials near the time of the snap.
Whistle/Flag: Encroachment, False Start, Snap Infraction (this is the umpire's primary, wing's secondary)
Flag Only: Illegal Formation, Illegal Shift, Illegal Motion
Responsibility on shift and motion can fall on either the R or wing, depending on whose key is moving. R has responsibility on false starts by backs, but wings can definitely pick this up if the R misses it.