Ring for a fighting sport

A ring for a fighting sport comprising:

• a platform having a top surface that provides the floor of the ring for a fighting sport and supported by a support system comprising a central support post and a set of lower girders that extend only from the central support post and are generally parallel to the platform;
• a plurality of fence rings, said plurality of fence rings being coaxially distributed along a central vertical axis such that each of said fence rings is provided at a corresponding predetermined height above said floor and each of said plurality of fence rings is approximately superimposed over the next lower one of said plurality of fence rings in top plan view, said plurality of fence rings defining a circular fighting area on said floor, and said circular fighting area having a center through which passes said central vertical axis;
• a plurality of posts for supporting said fence rings above said floor of the ring for a fighting sport are extending down below the platform, said plurality of posts being evenly distributed along the perimeter of a circle concentric with said circular fighting area but having a diameter larger than the diameter of said circular fighting area;
• and
• a plurality of shock absorbers, each of said fence rings being connected to each of said posts by one of said plurality of shock absorbers;
• wherein at least one fence ring is mounted such that the at least one fence ring can be urged against a spring return force in one of either an upward or downward direction.