A great Mini Sumo Robot: The Pololu Zumo 32U4 OLED robot.
Arduino Sumo Robot : 5 Steps - Instructables
ARES 6x6 Sumo Robot Price Jsumo | JSumo
DIY Sumo Robot - YouTube
Le Projet Robot Sumo - Collège Penn Ar C'hleuz - Brest
Tokyo, Japan - Robot operators from seven countries (Brazil, Mexico, Turkey, Latvia, Mongolia and Estonia) compete at the International Robot Sumo Tournament 2013, in the Ryougoku Sumo Hall (Ryogoku Kokugikan) on December