What type of undergarment must all contestants wearing a one-piece singlet have?

Contestants wearing a one-piece singlet are required to have an undergarment that completely covers the groin and buttocks to ensure adherence to the rules of the sport and to maintain a standard of modesty and proper coverage during competition. This requirement is in place to provide athletes with a layer of protection and to prevent any accidental exposure while wrestling, which can occur due to the physical nature of the sport. Ensuring that athletes are properly covered also promotes a professional appearance in the competition setting, aligning with the guidelines set forth by the governing body of wrestling.

Other options do not meet the standards for coverage required during competition. Loose-fitting shorts may not provide adequate coverage or could shift during matches, leading to potential exposure. No undergarment is not acceptable as it entirely disregards the necessity for proper coverage. Swimwear style bottoms, while potentially suitable in some contexts, may not meet the specific requirement for complete coverage in competitive wrestling.