Jankowski started in left field and went 0-for-4 in Saturday's 8-3 loss to Colorado.
Jankowski stepped into the lineup for Evan Carter, who developed lower-back stiffness Saturday. Carter, who has been the primary left fielder against right-handers, joined Wyatt Langford (hamstring, IL) as unavailable outfielders. If Carter faces an extended absence, Jankowski, Ezequiel Duran and Robbie Grossman are in the mix for starts in left field.