NFL Week 4 arrives with a Chicago headliner that is as much about who plays quarterback as who wins. The New York Jets visit the Bears on Sunday at 1 p.m. ET at Soldier Field. Chicago sits 2-1 after Case Keenum's Monday night dismantling of the Eagles; the Jets are 1-2 and looking for a road reset under Aaron Glenn against Ben Johnson's rising offense.

The quarterback card dominates the preview. Tyson Bagent is likely to start per NFL Network, but Johnson had not named him as of Friday. Caleb Williams remains sidelined with a hamstring injury. That uncertainty shapes how both defensive coordinators script early downs and how fantasy managers set lineups before lock.

Beyond Chicago, Week 4 is a full weekend board of early, late, and prime-time games. The Jets-Bears window is the clearest national storyline entering Saturday because the starter mystery is still live. Kickoff temperatures and wind off Lake Michigan can also matter for a young or backup quarterback throwing outside.

Backstory: Johnson's offense scored freely before Williams' injury and looked sharp again with Keenum. The Jets need a clean pocket and early stops to keep the game from tilting into Chicago's preferred script.

Where to watch: check local NFL maps for the 1 p.m. ET window; team apps for in-house previews.

What we know:
Jets at Bears is set for 1 p.m. ET Sunday. Records are Jets 1-2, Bears 2-1. Bagent is likely but not official.

What we don't:
Johnson's final starter declaration and late inactive lists.

Preview discipline matters here too: records and kickoff time are locked; Chicago's starter is not. Refresh team apps Sunday morning before treating any QB projection as final.