The classification rules of the International Federation for Wheelchair Rugby state that athletes with a physical impairment that affects the arms and legs are eligible to compete in the sport at the Paralympics.
Classification also groups athletes in classes, defined by the degree to which they are limited in their ability to perform activities within that sport.
In Wheelchair Rugby every player is assigned a point value based on their functional ability. There are seven classes from 0.5 for a player with the least physical function increasing by 0.5 per class through to 3.5 for the most physical function.
To minimise the impact of types of impairment on the outcome of competition, the total on-court point value during play for each team of four players cannot exceed 8. For each female player a team fields on court, the maximum points level increases by 0.5.
Read an overview of classification at the London 2012 Paralympic Games