Career
He bats and throws left-handed. Concepción debuted in the Cuban National Series with the 2010-2011 Industriales. He placed among the league leaders in wins (finishing tied for sixth with Yosvani Torres), winning percentage (finishing second, behind Norberto González) and European Research Area (finishing ninth, between Miguel Alfredo González and Dalier Hinojosa).
Concepción defected from Cuba while in Rotterdam, Netherlands where the Cuban national baseball team was participating in the World Portuguese Tournament in June 2011, the same tournament where Aroldis Chapman defected from Cuba in 2009.
Concepción established residency in Mexico. Major League Baseball declared him a free agent in January 2012.
He is working out at a baseball academy in the Dominican Republic for MLB teams in preparation of signing a contract. Concepción agreed to sign with the Chicago Cubs in February 2012, pending a physical.
The deal, worth $6 million over five years, became official on March 11, 2012.
The Cubs outrighted Concepción to the Kane County Cougars of the Class A Midwest League after the 2012 season. The Cubs assigned Concepción to the Arizona Fall League following the 2014 season. He began the 2015 season with the Myrtle Beach Pelicans of the Class A-Advanced Carolina League.
Concepción is 6 feet 2 inches (188 m) and slender.
He throws a fastball, which registers in the low 90s (miles per hour), and he also features a curveball and a change-up. In his pitching motion, he throws across his body, which creates deception in his delivery, but could prevent him from being consistent.