Los Angeles Angels right-hander Guillermo Zuniga (pectoral) was placed on the injured list on April 8 with a right-pectoral strain, although manager Ron Washington said the injury wasn't considered serious. Zuniga had a 7.20 ERA in five innings before he landed on the shelf. He started a throwing progression on April 26, threw from 105 feet on April 29 and threw a live bullpen session last Friday. Zuniga started a minor-league rehab assignment in the Arizona Complex League on Monday. The 25-year-old gave up one hit and struck out one in two-thirds of an inning on Monday, also hitting a batter and throwing a wild pitch. Zuniga will probably need a few more rehab outings before the Angels are comfortable returning him to their major-league bullpen.