How can a player prove that any bodily damage was caused solely by their play in the NFL? What if the majority of damage occurred while they were in college?
If a welder burns his hand while working, is that the fault of the employer for not providing enough training and supervision or the fault of the employee? Who's liable for damages?
If the 'professional' welder gets hurt, it's likely do to actions within his control. As such, he, and his union, are responsible for any compensation or treatment beyond what is normally provided for by his team (company).