O'Brien was not recalled from Triple-A Reno when D-Backs' catcher Tuffy Gosewisch went down with a knee injury because he still needs more reps behind the plate, reports the Arizona Republic's Nick Piecoro. This isn't exactly surprising as there have been questions about O'Brien's defense for some time and he has just 10 games at catcher this year. Manager Chip Hale has positive things to say about his progress, but it is clear that despite his .343/.385/.657 and 12 home runs he will have to do more defensively to get called up to the D-Backs.