Stevenson cleared waivers and was sent outright to Triple-A Lehigh Valley on Wednesday.
Stevenson was designated for assignment by the Phillies on Thursday.
Philadelphia claimed Stevenson off waivers from the Giants on Friday and optioned him to Triple-A Lehigh Valley.
Stevenson was designated for assignment by the Giants on Friday.
Stevenson was optioned to Triple-A Sacramento by the Giants on Tuesday.
Stevenson is out of the lineup for Sunday's game against the Brewers, Susan Slusser of the San Francisco Chronicle reports.
The Giants recalled Stevenson from Triple-A Sacramento on Wednesday, Evan Webeck of The San Jose Mercury News reports.
The Giants acquired Stevenson from the Athletics on Wednesday in exchange for cash considerations, Martin Gallegos of MLB.com reports.
Stevenson was designated for assignment by the Athletics on Friday.
Stevenson was optioned to Triple-A Las Vegas on Tuesday.