Hamilton, 34, hit .253 with eight homers and 25 RBIs in 50 games after the Rangers acquired him from the Angels early last season. Hamilton was plagued by injuries in 2014-15, limiting him to 139 games over the past two seasons.
Manager Jeff Banister said Saturday that Hamilton's lack of at-bats this year -- counting several in extended spring training -- means he needs to see at least 20-30 more at-bats in his rehab assignment before being ready to return to the Majors.
Dave Sessions is a contributor to MLB.com based in Arlington. This story was not subject to the approval of Major League Baseball or its clubs.