1st and Ten
...that the 1st and Ten System creates the yellow line seen on American football telecasts which shows where a team will earn a first down?
...that the <b id="mwA1g"><a href="./1st_&amp;_Ten_(graphics_system)" id="mwA1k" rel="mw:WikiLink" title="1st &amp; Ten (graphics system)">1st and Ten</a></b> System creates the yellow line seen on <a href="./American_football" id="mwA1o" rel="mw:WikiLink" title="American football">American football</a> telecasts which shows where a team will earn a first down?