had that happen at a tournament about 5 or 6 years ago. 3 man RR, all 1-1. it's 3 pm, long day no one wants to re-wrestle. what a mess.
Same situation - my solution was to offer all three wrestlers the opportunity of re-wrestling the bracket or provide all three with a gold medal. The wrestlers decision was unanimous, all three received a gold medal, and went home happy.
