Hamilton (shoulder) could begin a rehab assignment with Triple-A Round Rock this weekend, Jeff Wilson of the Fort Worth Star-Telegram reports. Hamilton is currently at the Rangers' extended spring training facility, and he said his injury only bothers him when he sneezes, according to Jeff Wilson of the Star-Telegram. While he now seems to be on track to join the Rangers at some point in May, Hamilton could have a lengthy rehab assignment with Triple-A Round Rock. He'll play in another extended spring training game Friday, and the Rangers will likely then make a decision on the rehab assignment.