Trevor Siemian’s season is officially over.

Chicago Bears coach Matt Eberflus announced Friday that Siemian would undergo season-ending surgery to repair an oblique injury suffered during pregame warmups last Sunday against the New York Jets.

Eberflus said that the veteran quarterback played through the injury due to the limited quarterback room.

Prior to Sunday’s loss, Chicago ruled out 2nd-year passer and former Ohio State quarterback Justin Fields with a shoulder injury. In place of Fields, Siemian logged all 56 offense snaps and completed 14 of 25 passes for 179 yards, 1 touchdown and 1 interception.

Fields is expected to return this week against NFC North rival Green Bay. Nathan Peterman, who was elevated from the practice squad last week, will serve once again as the backup.

A 2015 7th-round pick out of Northwestern, Siemian has played for the Denver Broncos, Minnesota Vikings, Tennessee Titans New Orleans Saints and Jets during his career.

As a member of the Wildcats from 2011-14, Siemian threw for 5,931 yards and 27 touchdowns against 24 interceptions.