Sosa went 1-for-3 with a triple, a walk, a stolen base, two RBI and a run scored in Sunday's 7-6 extra-inning loss to the Marlins.
Sosa is out of the lineup for Monday's game against the Giants, Todd Zolecki of MLB.com reports.
Sosa is starting at shortstop and batting eighth in Saturday's game against the Giants.
Phillies manager Rob Thomson expects Sosa (foot) to return to the lineup Thursday, Corey Seidman of NBC Sports Philadelphia reports.
Sosa was scratched from the lineup for Wednesday's Grapefruit League game against Atlanta because of a left foot contusion, Corey Seidman of NBC Sports Philadelphia reports.
Sosa signed a one-year, $1.7 million contract with the Phillies on Thursday to avoid arbitration, Scott Lauber of The Philadelphia Inquirer reports.
Sosa is out of the lineup for the first game of Monday's doubleheader with Atlanta, Scott Lauber of The Philadelphia Inquirer reports.
Sosa went 2-for-4 with a triple and a two-run homer in Monday's 10-4 win over the Giants.
Sosa is not in the lineup for Sunday's game at Cleveland.
Sosa (leg) is out of the lineup Tuesday versus the Brewers.