CLEARWATER, Fla. --- Righthander Aaron Harang was scratched from his scheduled start Saturday because of lower back discomfort.

Harang's status is day-to-day, the Phillies said. Righthander Paul Clemens, a non-roster invitee who was slated to pitch second, will start in Harang's place against the Detroit Tigers in Lakeland.

Harang, 36, missed his first start of the spring with back issues but pitched Monday against the Baltimore Orioles in Sarasota. The veteran threw two scoreless innings while allowing three hits and issuing two walks.

"It's a little muscular thing that he has," manager Ryne Sandberg said. "I'm not that concerned about it."