The Braves had to make a bullpen move after Josh Collmenter threw 50 pitches and Jackson pitched on a third consecutive day during Wednesday's 14-4 loss to the Nationals. With these two relievers unavailable for Thursday's game, Atlanta promoted Blair, who threw 90 pitches during Sunday's start with Gwinnett, to have a long-relief option.
Kemp missed 10 games after suffering the hamstring strain while playing in chilly conditions in Pittsburgh. The outfielder had gone 8-for-16 with four doubles and two home runs leading up to the injury.
Mark Bowman has covered the Braves for MLB.com since 2001. This story was not subject to the approval of Major League Baseball or its clubs.