Casey Thomas, a draft pick of the Oakland Athletics last year, has died unexpectedly at age 24.

Thomas was the son of Athletics scout Tom Thomas. He as in Phoenix for extended spring training.

"We are devastated to hear of this tragedy within the A's family," Billy Beane said in a statement. "Our hearts go out to Tom and his family on their loss; Casey was a wonderful young man and teammate and will be missed by all in the A's organization."