ATLANTA --Mitch Keller has technically spent only one day in the major leagues.
However, Keller already feels more comfortable in the big-league surroundings. The top prospect will be officially recalled from Class AAA Indianapolis on Wednesday to start that night against the Braves at SunTrust Park.
Keller made his debut May 27 in Cincinnati, an 8-1 loss. He joined the Pirates before Tuesday night’s game with the Braves and went through a workout with the rest of the pitching staff.