Abstract: An electronic device for refereeing an arm wrestling match is provided which includes a housing within which an electronic circuit is disposed including appropriate sensors, indicator devices, a power supply, and other electronic components with the upper surface of the housing forming a playing surface. Several light and sound emitting devices, a digital clock, and a digital scoreboard are provided for regulating play. Sensors are provided for detecting one player's hand being forced to the playing surface as well as the premature lifting of one player's elbow. The device automatically starts the match shortly after both player's elbows are set, detects infractions committed by a player as well as successful endeavors on the part of one player to force the other player's hand to the surface and attributes points accordingly. In addition, it maintains the score of each player as well as the elapsed time, and provides numerous audio and visual indications during and after the match.