8:29pm: T.R. Sullivan of MLB.com is reporting that the Rangers have also signed catcher Adam Melhuse to a minor league contract with an invitation to spring training.
6:19pm: Jeff Wilson of the Fort Worth Star-Telegram reports that the Rangers have signed Omar Vizquel to a minor league contract.
Vizquel, 41, hit .222/.283/.267 with 23 RBI in 92 games for the Giants last season. He will be invited to spring training and given a chance to make the roster as a utility infielder and backup to rookie shortstop Elvis Andrus.