ベネズエラン・サマーリーグ
Díaz signed with the Pittsburgh Pirates as an international free agent in 2008. He made his professional debut in 2009 for the Venezuelan Summer League Pirates. From 2010 to 2013, he played for the Gulf Coast Pirates (batting .210), West Virginia Power (batting .221, and then .208 the following year) and Bradenton Marauders (batting .279).