Eisert will serve as the White Sox's opening pitcher for Saturday's game against the Phillies, Brooke Fletcher of Chicago Sports Network reports.
The top half of the Philadelphia lineup often features three tough left-handed hitters in Kyle Schwarber, Bryce Harper and Brandon Marsh, so the White Sox will have the left-handed Eisert open the contest in an effort to avoid an early deficit. Once Eisert works the first inning or two, right-hander Sean Burke is expected to take over in bulk relief.