Hamilton (shoulder) went 1-for-3 with a single in Sunday's rehab game for Triple-A Round Rock, Jeff Wilson of the Fort Worth Star-Telegram reports. Making his first appearance of what could be a lengthy rehab assignment, Hamilton took all of his at-bats against Barry Zito. Expect to see Hamilton with the Rangers at some point before the end of May, as there's a 20-day limit on rehab assignments for batters.