The Rangers optioned Robert to Triple-A Round Rock on Sunday.
After covering three innings across two relief appearances Friday and Sunday, Robert will be swapped out of the Texas bullpen in favor of a fresh arm in right-hander Gerson Garabito, who was recalled from Triple-A in a corresponding move. During his first stint in the majors, Roberts gave up two earned runs on five hits and two walks while striking out four over 4.2 innings.