Siemian was carted to the locker room during Sunday's game at Tampa Bay with a left (non-throwing) shoulder injury and is questionable to return, Patrick Smyth of the Broncos' official site reports.
Slammed to the turf hard by Clinton McDonald on a second-quarter sack, Siemian was lifted from the contest, examined on the sidelined, and promptly taken from the field for further testing. If Siemian isn't cleared for further action, he'll finish five of seven for 68 yards and an 11-yard touchdown to Demaryius Thomas. In the meantime, rookie Paxton Lynch will direct the Broncos' offense.