Featherston was promoted to Triple-A Omaha on Friday, Jeffrey Flanagan of MLB.com reports.
The 29-year-old has spent 102 games this season at Double-A, slashing .240/.292/.404 with 13 homers and 49 RBI for Northwest Arkansas, but roster shuffling above him in the organization has now allowed him to move up to Triple-A. His last big-league appearance dates back to the 2017 campaign with the Rays, when he struggled to a .179 average with two home runs and six RBI over 17 contests.