I am sure this has been covered a 100 times but I can't find a current thread so I apologize in advance. We all know we start a new FIRST series on a line. Here is my question that many of us cannot agree on. Does every subsequent first down have to start on a line? Example, a runner clearly gains 11.5 yards on first and 10 and ends at the 31.5. Do you
A) Set the chains where it ends (31.5)
B) Ball goes to the 31 and chains are set on the line.
C) Ball goes to the 32 and chains are set on the line.
I know my answer but do not want to taint your answers. Thanks in advance.
The EXACT dead ball spot is a judgment of what the covering official has observed, which hopefully is as exact as possible. On today's well marked fields the lines are properly, and accurately spaced. that spot is then visually matched to a spot on the sideline where the chains are then placed. Before the game the chains are checked to confirm that they accurately measure a 10 yard difference. The chains measure and determine where the next "Yard to gain" target will be, and when necessary determine whether that objective has been accomplished,
Surveyors tools might well be a more perfect tool, but judgment, of the covering official, matching that spot to the placement of sideline chains, visually, has proven to be a far more practical means of managing the "Yard to gain" spot objective. Mid-field measurements to determine LTG accomplishment often use intermediate field lines to help determine success or, or maintain consistency if/when sideline chain resetting may be necessary. to maintain the initial LTG objective.
Accurate determination of the Dead Ball spot supported by consistent Chain placement has proven to be an effective & practical tool serving the sport well since it's inception. "If it ain't broke, don''t fix it" seems an applicable concept here.