The Rangers placed Higashioka on the 10-day injured list Tuesday with a right flexor strain, Jeff Wilson of AllDLLS.com reports.
Higashioka has posted an .813 OPS in 30 trips to the plate since the beginning of July, but his injury will keep him on the sidelines until at least the end of the month. Austin Wynns was selected to the active roster to replenish Texas' catcher depth.