A worst-case scenario has unfolded for Dolphins quarterback Chad Pennington after MRI results indicated a torn capsule will likely sideline him for the remainder of the season, multiple sources have confirmed. Pennington will seek a second opinion.

The seriousness of the injury not only has the potential to end his tenure in Miami, which was likely to conclude at the end of the season anyway. Now, one of the NFL's most accurate passers in league history could also be looking at the twilight of his career.

Pennington has already endured two serious surgeries to the same shoulder, which has caused him to face major, tedious recoveries. A two-time recipient of the NFL's Comeback Player of the Year award, Pennington will seek a second opion from Dr. James Andrews in Birmingham, Ala.

If this is the end of Pennington's time in Miami, it will have been short-lived but largely celebrated. He completed 321 of 476 passes last year for a career-high 3,653 yards while providing the inspiration for the greatest turnaround in NFL history.

It's a devastating blow to a quarterback who has already overcome so much -- and it's a sad but unfortunately easy-to-believe scenario for the veteran.

If initial diagnosis proves true, the Dolphins will move forward with the transition to a scenario they have been planning for the past year as Chad Henne takes over as the team's starter.

Henne completed 10 of 19 passes for 92 yards after he replaced Pennington on Sunday. He also threw an interception that was returned for a touchdown.