If someone plays soccer with friends and trips his opponent up and injures him/her, he/she could be confronted with claims for damages. For behaviour that is in accordance with the rules, for example if two players collide with their heads or also for “normal” rule violation there is no liability (no claims for damages), because the duty of care is not violated. However, if you kick your opponent´s leg in gross culpability, there can be a claim for compensation for pain and suffering. Then, in legal proceedings, the actual fault and a possible illegal behaviour, which would be the basis for claims for damages, must be investigated.