Casey Thomas, the A's 34th round draft pick in 2016, passed away unexpectedly in Phoenix.
 
"We were devastated to hear of this tragedy within the A's family," said Billy Beane, the A's executive vice president of baseball operations. "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."
 
The 24-year-old Kansas City native was the son of A's pro scout Tom Thomas, and was currently in extended spring training. He spent the 2016 season on the roster of the A's rookie-level affiliate in the Arizona League, where he hit .258 with 18 RBI in 37 games.
 
Prior to signing with the A's, he played collegiately for GateWay Community College in Phoenix before transferring to Texas A&M-Corpus Christi.
 
Additional information is not known at this time.