My DH and DS have always had an up and down relationship. DH can be very impatient and DS is hard work!
DS plays Rugby and has done for years, he used to play at a much higher level than he is currently.
Part of this was an injury to his shoulder (very minimal injury) but still we ensured he got the right treatment, paid for physio and he had MRI scans to ensure all was well.
Even before the injury his playing could be really up and down, he is very good at the sport but just has a bit of a bad attitude, ie if DH even looked at him on the field and he mucked up, he would blame DH, lose his temper etc.
As DS has got older he has become, almost less interested in it and will often blame DH (DH gets very involved, ends up coaching sometimes, constantly going on and on at DS about watching himself back on videos of the game)
I have told DH time and time again to step back and just leave him to it, he is 14 now, if he wants to pursue it he will.
DH agrees, but somehow we always end up falling back into DH pushing DS back into it.
I have to be honest, it affects the whole household. They both end up in a foul mood, I end up trying to play peacekeeper and I have had enough.
Tonight, another huge bust up as DH paid for more private physio for DS (he doesn't need it at all) DS hasn't really kept up with the exercises he is supposed to do in the evening and yet again another argument I am in the middle off.