Prior to the 2015 season, all of the questions surrounding the catching position were focused on whether the Pirates would re-sign Russell Martin. They let Martin walk, instead opting to trade for Francisco Cervelli, who was under team control for two more seasons. With top-prospect-at-the-time Tony Sanchez struggling, the Pirates were hoping that Sanchez could either turn things around, or that another starting catching option could emerge to replace Cervelli.

Right around that time, Elias Diaz started to emerge. He was fresh off a breakout season in 2014 at the Double-A level, with a .328/.378/.445 line in 367 plate appearances. He moved up to Indianapolis the following year, posting a .271/.330/.382 line in 363 plate appearances, and getting the call to Pittsburgh over Sanchez when t...

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