The Philadelphia Phillies have placed Cliff Lee on the disabled list with a mild elbow strain.

The club doesn't believe the injury is serious.

"It's never good news when you lose one of your No. 1 pitchers, but it's pretty mild," Ruben Amaro said.

When Lee underwent an MRI on Tuesday, there were concerns the left-hander might become the latest pitcher to be sidelined by a serious injury.