Kahnle missed 15 games while recovering from the shoulder injury. He is 2-1 with a 3.43 ERA in 47 appearances this season.
Scahill and Parker are both back with the Rockies for the third time this season. Scahill is 1-0 with a 5.68 ERA in four games. Parker has played in five games and has one hit in nine at bats.