Miami Dolphins quarterback Chad Pennington has been initially diagnosed with a torn capsule in his throwing shoulder and the Dolphins expect him to miss the rest of the season, sources familiar with the injury he suffered Sunday told ESPN senior NFL analyst Chris Mortensen.

Pennington will seek a second opinion from orthopedic specialist Dr. James Andrews, who has performed two shoulder surgeries on the quarterback. On Tuesday, Jeff Darlington of the Miami Herald told ESPN's "First Take" that the appointment is scheduled for Friday.

Pennington underwent tests Monday on his right shoulder, which he hurt early in the third quarter of Sunday's 23-13 loss at San Diego. He missed the rest of the game, and coach Tony Sparano said he didn't know how long Pennington will be sidelined.

"We don't have a comment, because the evaluation process is still ongoing," team spokesman Harvey Greene said.

Pennington has already had surgery on the same shoulder in 2004 and 2005.