Both the team and Darvish said Wednesday there is nothing physically wrong with the 25-year-old right-hander.
Darvish was scheduled to start Friday, but rookie Martin Perez will take his place at home against the Minnesota Twins. Left-hander Derek Holland will come off the disabled list and start Saturday, Rangers manager Ron Washington said. Roy Oswalt, who has been hit hard in his last two starts, takes his turn Sunday in the last game before the All-Star break.
Washington said Darvish will be eligible to pitch in next week's All-Star Game in Kansas City if he is selected in the final round of fan voting.
Darvish, a five-time All-Star in Japan, signed a six-year contract worth $56 million with Texas in the offseason. In 16 starts this season, he is 10-5 with a 3.59 ERA.
Holland was 5-4 with a 5.10 ERA this season before going on the disabled list last month because of a stomach ailment and weakness in his throwing shoulder.
Holland gave up five runs and eight hits in six innings Monday in his second rehab start for Triple-A Round Rock, but the outing was clean until a five-run sixth inning that included three home runs. He allowed one run on three hits in three innings in his first start for Round Rock.
Holland's return will leave two Rangers starters -- Neftali Feliz (elbow sprain) and Colby Lewis
(forearm tendinitis) -- and one replacement starter -- Alexi Ogando (groin strain) -- on the disabled list.
Information from The Associated Press was used in this report.