Knowledge is not always power, but a little communication can go a long way.

That's perhaps the biggest takeaway from last Saturday's game between Yokohama F. Marinos and Urawa Reds, where an outside source of information gave Teruhito Nakagawa a somewhat undeserved goal in the hosts' 3-1 win.

While the goal itself — and the minutes of chaos that followed — will not be remembered as notoriously as Daiki Sugioka's famous "phantom goal" for Shonan Bellmare in May, it became yet another arrow in the quiver of those arguing for the introduction of video assistant referees.