Hamilton (hamstring) will begin a rehab assignment Wednesday at Double-A Frisco, Anthony Andro of Fox Sports Southwest reports. Hamilton began participating in full baseball activities at the end of last week, and his rehab stint is not expected to extend beyond five or six days. The tentative plan is for Hamilton to join the team in Baltimore and be activated prior to Monday's game. There's a chance he could return earlier, but the team is apparently wary of allowing him to play on the turf in Toronto, where the Rangers play Friday through Sunday.