Kerr will be Atlanta's opener Thursday in Game 3 of the wild-card series versus the Phillies.
The left-handed Kerr will be tasked with facing lefties Kyle Schwarber and Bryce Harper at least once. He threw 6.1 scoreless frames covering two appearances in September against Philadelphia. Grant Holmes is slated to absorb the lion's share of the workload for Atlanta in Game 3 as a bulk reliever.