Since being recalled on Sept. 6, O'Brien has just five at-bats and they've all come as a pinch hitter.

EDGE Analysis

He's become somewhat buried on the Diamondbacks depth chart at this point. At 26 years old, O'Brien is no longer a young prospect and it's unclear what his future is with Arizona. He offers tremendous power, but he's also hitting just .145 this year with a brutal 40 percent K rate. Those numbers will need to improve if O'Brien is going to be part of Arizona's 2017 plans.