If someone gets hurt and starts bleeding when you are playing sports, stop the game. In organized sports, the player is not allowed to play until the bleeding stops and the cut is covered with a bandage. If there is blood on playing court, like a basketball court or wrestling mat, the team trainer will clean the area with disinfectant. If the player gets blood on the uniform, the uniform must be changed.
These safety rules are flowed to keep people from the injured player’s blood. There are no written cases of HIV from sports.