Bart is out of the lineup for Sunday's game against the Rockies.
Bart is out of the lineup for Wednesday's game against the Athletics.
Bart went 1-for-4 with a three-run homer and two runs scored in Thursday's loss to the Brewers while also drawing a walk.
Bart will start at catcher and bat cleanup Thursday against the Brewers.
Bart (head) is starting at catcher and batting fifth in Saturday's game against the Red Sox.
Pirates manager Derek Shelton said Bart was scratched from the lineup ahead of Wednesday's 9-1 loss to the Mets after the catcher wasn't feeling well leading up to game time, Noah Hiles of the Pittsburgh Post-Gazette reports.
The Giants traded Bart to the Pirates on Tuesday in exchange for Austin Strickland, Alex Pavlovic of NBC Sports Bay Area reports.
The Giants designated Bart for assignment Sunday, Alex Pavlovic of NBC Sports Bay Area reports.
Bart (hamstring) is likely to play Sunday in the Giants' exhibition game against Triple-A Sacramento, Susan Slusser of the San Francisco Chronicle reports.
Bart left Friday's Cactus League game against the Cubs due to a hamstring injury, Russell Dorsey of Bally Sports reports.