This is a safety foul and should be called almost every time. The only time I am really hesitant to call it, is when the block in the back helps the defender make the tackle (pushed into the tackle). That is probably the only time I will consider what not making this call. This is very rare and I feel I made this call incorrectly a couple of weeks ago in a game I was working.
Peace
__________________
Let us get into "Good Trouble."
-----------------------------------------------------------
Charles Michael “Mick” Chambers (1947-2010)
|