Luetge was recalled from Triple-A Salt Lake on Sunday, Pedro Moura of the Los Angeles Times reports.
Luetge has pitched in 15 games this season for Salt Lake, compiling a 2.33 ERA, 17 strikeouts, and a save. The 29-year-old will take the roster spot previously held by Tim Lincecum, who has been optioned to Salt Lake to begin a rehab assignment.