How is this enforced? For example:
A) A returns a kick, interception, or fumble to their own 40 and is flagged for UC bringing ball back to own 25. Is it 1st and 10 or 1st and 25?
B) Team A gets a 1st down and Team B is flagged for a sideline warning (5 yards) immediately after the play is done and before the chains have moved. Is it 1st and 5 or 1st and 10 from the new location?
Thanks