The Raiders were encouraged by the results of starting quarterback Derek Carr's MRI and have informed quarterback Christian Ponder he will not be signed at this time unless Carr has a setback, according to ESPN.
An earlier report from ESPN stated Carr was unlikely to play Week 2 against the Ravens. NFL Network is reporting Carr has a bruised thumb.
Carr sustained the injury in the second quarter of Sunday's season-opening loss to the Bengals. He was replaced by Matt McGloin, who would likely start in Carr's absence.