I've never even heard of this before:
I know there are a lot of wheelchair sports around, but pushing a wheelchair on grass, compared with e.g. a basketball court, must take a hell of a lot of effort.
The size of the courts, balls and rackets are the same, but the ball can bounce twice before you hit it and the wheelchairs are bespoke.
British number one, Lucy Shuker says: "The wheels are cambered out at about 22 degrees, they have wheels at the front and back so it means, in theory, you shouldn't tip out backwards. I've got straps around my waist and knee guards which lock me in place."
Geraint Richards, performance director of GB Wheelchair Tennis says the players "literally zoom around the court".