Rebound Court

The Rebound Court (known as Bounce-out Court in PAL regions) is an unlockable court that appears in Mario Tennis: Ultra Smash. It is unlocked after 40 plays or by spending 8,000 coins on the unlocks menu. The court features average ball speed and average ball bounce, making it play similarly to the Hard Court of this game. However, a feature that sets it apart from the Hard Court is that the ball bounces towards the exterior edges of the court, indicated by the arrows marked on the court.

In-game description

 * "This court makes the ball bounce outwards, so you'll have to anticipate the direction!"