Ever been slapped? Not a good time to smile but obviously cannot be compared to been slapped in the face with a basketball. The force the ball moves can even knock you down if caught unawares.
Basketball is more of an aerial game and so there are many case of the players and even the fans getting smashed in the face by the ball. Mostly it happens unplanned but some of the players deliberately hit their opponents with the ball, out of anger, for revenge or some other reasons.
Below are photos of players at the receiving end of a basketball smash