The Athletics acquired
Mejia from the Diamondbacks on Monday for infielder Adam Rosales.
The 6-foot-7, right-handed reliever holds a combined 5.90 ERA between short-season Hillsboro and Low-A Kane County in the Arizona system. Mejia will get a new start with the A's, who are more than happy to take on projects -- especially one who's struck out 208 batters in 208.1 career farm innings. He'll likely report to Low-A Beloit.