Chicago's quarterback is out for tonight's home game with a Grade 2 hamstring strain, forcing a decision between Tyson Bagent and Case Keenum with a possible return in October.

Two defensive rookies returned to practice, not eligible to play until Week 5, as the club's QB shortage separately pushes a practice-squad arm toward the 53-man roster.

QB Caleb Williams (hamstring) is out for Monday's home game against Philadelphia after not practicing Friday. Tyson Bagent is questionable after clearing concussion protocol, with Case Keenum next in line to start if Bagent can't go.

LB Noah Sewell and DL Shemar Turner are out for Monday's game, while CB Tyrique Stevenson and K Cairo Santos are trending toward playing after full practices. LT Ozzy Trapilo, working back from a major knee injury, will be held out at least one more week despite full practice participation.

With Caleb Williams and Tyson Bagent both out, Keenum took first-team reps Friday to prepare as Chicago's Monday-night starter, while three more injuries surfaced on the report.

With starter Caleb Williams (hamstring) and backup Tyson Bagent (concussion protocol) both out, veteran Case Keenum is set to start Chicago's home game against Philadelphia.

CB Tyrique Stevenson (hamstring) is considered unlikely for Monday's game, adding to an already-thin secondary, though LT Ozzy Trapilo returned to full practice.

Chicago's Caleb Williams is week-to-week with a hamstring injury suffered against Minnesota, with backup Tyson Bagent also out under concussion protocol. Case Keenum has taken over first-team reps ahead of Monday night's game against Philadelphia.

Cornerback Tyrique Stevenson suffered a hamstring injury against Minnesota, joining Coby Bryant and Kyler Gordon on Chicago's injury list ahead of a tough matchup with Philadelphia.

Left tackle Ozzy Trapilo is nearing a return with his first full padded practice, while linebackers Shemar Turner and Noah Sewell have had their practice windows opened as they recover from ACL injuries.

Johnson said he didn't expect Williams to practice this week but stopped short of ruling him out for Monday's game. Tyson Bagent would work with the starters if Williams sits; 38-year-old Case Keenum is the emergency option. Johnson: "He's working through every avenue that he's got available to get back on track here."

Bagent was hit in the head and later sacked to the ground in Sunday's loss to Minnesota and was placed in the NFL's protocol Tuesday, leaving Case Keenum as a possible Week 3 starter if both Williams and Bagent are unavailable. Johnson: "There's a lot of confidence that both of those guys can get the job done if it comes to it."

Williams was carted off with a non-contact injury Sunday but the Bears say he avoided a serious tear; backup Tyson Bagent will work with the starters ahead of Monday night's home game against Philadelphia.

Chicago is tied for third-most penalties in the NFL through two weeks and ranks 19th in red-zone conversion; two field-goal attempts were blocked in the fourth quarter of Sunday's loss.