"Cole Hamels did indeed have a precautionary MRI on Monday for his shoulder, which showed some inflammation but no structural damage.

According to Phillies general manager Ruben Amaro Jr., Hamels has some inflammation in posterior shoulder and his posterior rotator cuff and will miss his next start. The good news, however, is that the Phils' lefty won't be hitting the disabled list.

While Hamels will miss one start, Amaro was unsure if he'll miss any more.

"He actually is very good," Amaro said. "He has some inflammation in his posterior shoulder and his posterior rotator cuff, but no major changes."

Hamels threw only five innings in his last start, a loss to Washington on Friday and Charlie Manuel said Hamels felt stiffness in his shoulder.

The lefty said the start was a "dead-arm" start, which happens to a pitcher over the course of a season.

"Some of these off days will help," Amaro said. "Having Oswalt back in the rotation, and it looks like he's progressing well, and Worley or Kendrick will probably take a start for [Hamels] sometime down the line. The fact that those guys have pitched pretty darn well helps a lot."

Amaro also confirmed that Hamels received a dye injection during the MRI. CSN's Leslie Gudel reported through sources on Monday that Hamels had the dye injection, which won't allow him to throw for two days.

Hamels is 13-7 this year with a 2.62 ERA.

The team's website lists Roy Oswalt, who last pitched Saturday, as the probable starter for Friday in place of Hamels. Because of Sunday's rainout and a Monday off-day, Oswalt would be pitching on regular, five-day rest.

Amaro was unsure if Oswalt will pitch in Hamels' place on Friday.

"I would think that [Oswalt] would probably pitch in rotation, but we have some space there," he said.

Polanco update

Placido Polanco was placed on the disabled list after the Phillies' 3-2 loss to the Arizona Diamondbacks. The move is retroactive to Aug. 7.

Right-handed pitcher Michael Schwimer was called up from Triple A Lehigh Valley to fill Polanco's spot on the 25-man roster."