He did not sign and attended Alcorn State University, but was unable to play baseball due to issues with his academic transcript.

In 2013, he hit 25 home runs with a .915 on-base plus slugging (OPS) while playing for the High Desert Mavericks and Jackson Generals.

[8] He cleared waivers and the Mariners declined his return, allowing him to be outrighted into San Diego's minor league system.

[10] The Yankees designated Blash for assignment on February 20, 2018, in order to make room for Brandon Drury, who was acquired earlier in the day in a three-team trade.

[12] On December 7, 2018, Blash signed a contract with the Tohoku Rakuten Golden Eagles of Nippon Professional Baseball (NPB)[13] for the 2019 season worth ¥120 million.