Answer:

1. In the first picture, the player is trying to shoot the ball using his right hand while the opponent is trying to block the ball.

2. In the second picture, I think the referee called out for violation during the game or he is trying to explain the different violations before the game.

3. In the third picture, an athlete experiences muscles sprain/injury where he got during the game or

4. In the fourth picture, I think the person is giving his self a cold compress to cool the injured area because it helps to reduce swelling.

Hope this helps! not really sure tho in number 2.