Hamilton saw a doctor Thursday, a day after pulling himself out of game after four innings of Texas' 6-4 victory over Toronto.

Hamilton said he had been experiencing lower back pain since playing on the turf in Minnesota last weekend. Assistant general manager Thad Levine says Hamilton was given a "root nerve injection" to reduce inflammation.

Hamilton is scheduled to fly to Baltimore on Friday before the start of the Rangers' weekend series against the Orioles. Team trainer Jaime Reed will then examine Hamilton and determine if he can play.

The Rangers say he is day-to-day.