View full size photo uploaded October 24, 2009 The news that top Diamondbacks pitching prospect Jarrod Parker is due to have Tommy John surgery today was not unexpected - he'd been out of action for most of the second-half of the year. But it's still never a good feeling when you hear about any pitcher getting his arm opened up. That's especially so when it is a young one, of whom much had been hoped for the future, with his nam...