Bradford (concussion/shoulder) is listed as inactive Thursday at Detroit, Geoff Mosher of CSN Philadelphia reports.
Although Bradford took part in a pregame warmup to test out his shoulder, he won't start and, in fact, not even suit up, missing his second consecutive contest. The Eagles will instead turn to Mark Sanchez under center.
Ertz (concussion) has been ruled out for Thursday's contest at Detroit.
With only three days to recover from a concussion suffered Sunday versus the Buccaneers, Ertz was able to progress to a limited showing in Wednesday's practice, according to Zach Berman of the Philadelphia Inquirer. However, he was unable to complete all phases of the league's protocol for head injuries. His next opportunity to suit up arrives on Dec. 6 in New England.
Mathews (concussion) has been ruled out for Thursday's game in Detroit.
Mathews has made little progress in his quest through the concussion protocol, leaving the Eagles to trust in DeMarco Murray, Darren Sproles, and, to a lesser extent, Kenjon Barner out of the backfield. His next chance to take the field arrives on Dec. 6 at New England.
Buccaneers defensive end George Johnson appeared in a career-high 16 games in 2014 for the Lions, but he made no starts. He mostly was a rotational pass rusher last year, but the job seemed to suit him well, as he totaled a career-best six sacks.
Seferian-Jenkins (shoulder) is listed as doubtful for Sunday's game against the Colts.
Seferian-Jenkins was listed as questionable the previous three weeks, and while he doesn't seem to have suffered a setback, the Bucs are finally being realistic about his chances of playing. At this point, it's not clear that he will play again this season, as he still needs to rebuild strength in his shoulder and arm.