A little bit of metric, a lot of non-metric tradition.  i.e.:  &quot;18-yard box.&quot;<p><a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Football_pitch" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Football_pitch</a>