World Curling Federation Rules Of Competition 2. Participating Teams 2 (g) To be eligible to play in the World Wheelchair Curling Championship (WWCC) and qualifying events, a player must have significant impairments in lower leg/gait function (e.g. spinal injury, cerebral palsy, multiple sclerosis, double leg amputation, etc.), so that a wheelchair is used for daily mobility – more specifically, those who are non-ambulant or can walk only very short distances. Determination of minimum disability and appropriate classification is made by authorised international sports classifiers.