Manager Matt Williams was pleased with Harper's recent first-pitch opposite field single against off a left-hander and drawing the walk with the bases loaded.
Tanner Roark vs. Julio Teheran.
The injured right hander threw 35 pitches in his first bullpen session since straining his right lat muscle.
Denard Span is back in the leadoff spot after a day off. Bryce Harper is hitting sixth and Ian Desmond seventh again.
Matt Williams has called on Aaron Barrett in big spots, and the rookie delivered again Thursday.