Small autonomous robot fighting??

Does anyone know any details about this?

Video, 10 sec, very funny…

Sumo bots. Very big in Japan. I played around with some slower ones years ago. I'm not sure if there is any active competition group in the Cincy or southern Ohio area.

A sumo bot competition held by Hive13 in the boxing ring downstairs (2009 or 2010?) was my first visit to Hive13. Jordan like the river gave me a tour of the Hive13 space.