Feltner was removed from Tuesday's game against the Cardinals due to cramping in his right arm, Patrick Lyons of JustBaseball.com reports.
Feltner pitched six-plus innings before exiting the game, giving up two earned runs on six hits and a walk while striking out six batters. Manager Bud Black said he didn't want to risk Feltner pitching while his arm was bothering him, which explains the decision to pull the right-hander after he threw just one pitch in the seventh. The team doesn't believe Feltner's injury to be anything too serious, and he's still expected to make his next scheduled start in Sunday's season finale versus the Dodgers.