Well I can't speak for his specific injury but seeing how they have so many player movement rules for a double header is a statement on the lack of durability of today's player. It sure isn't like how it was in the 70s and 80s. There's no doubt that hurting a hammy is not good and uncomfortable but like you said, those guys from the 70's/80's must just chuckle at how soft this generation is on injuries.