The Rangers have traded left-handed reliever Eddie Guardado to the Minnesota Twins for a minor-league pitcher, general manager Jon Daniels said. Guardado had served as the Rangers' closer most of the month after C.J. Wilson came up with an elbow injury. Guardado, 37, was also considered to be a mentor to a young bullpen and clearly was one of the players who kept things loose in the clubhouse.
Minnesota agreed to deal minor-league right-hander Mark Hamburger. He has recorded 13 saves this year for Elizabethton in the Appalachian League, advanced rookie ball. The Rangers will purchase the contract of lefty Bill White from Triple-A Oklahoma. The assumption is that Frank Francisco will assume the closer's role.
-- Jeff Wilson