Fantasy Week 4 is a timing puzzle as much as a talent puzzle. NFL.com's schedule puts the first lock at 9:30 a.m. ET for Colts-Commanders in London, then the big domestic wave at 1 p.m., late games at 4:05 and 4:25, and Lions-Panthers at 8:20 p.m. on NBC. Managers who leave a London starter active must decide before coffee in many U.S. time zones.

The loudest single-player swing entering Sunday is Chicago's quarterback. NBC Sports fantasy and national NFL reporters say Tyson Bagent is expected to start against the Jets, which elevates the Bears' QB stream and changes how Jets pass rushers and Chicago skill players are valued. Ben Johnson still has not named Bagent from the podium, so treat the lean as a report — not a locked depth chart — until inactives post.

Elsewhere, undefeated Chiefs-Raiders in the late window and Rams-Eagles at 1 p.m. create high-usage skill-player decisions. Streaming defenses and kickers still hinge on weather and inactive lists more than Saturday preview chatter.

Backstory: Week 4 is early enough that one bad start can sink a season standings race, and late enough that bye weeks and injury replacements matter. The Bagent-Keenum watch is the clearest example of waiting for official word instead of locking a rumor Friday night.

Where to watch: Use NFL.com and your league's lock times; confirm Bears inactives before trusting any Chicago QB projection.

What we know:
Sunday kickoff windows are published. Bagent is the reported Bears lean. London locks first at 9:30 a.m. ET.

What we don't:
Johnson's official starter, final inactives, and last-minute weather scratches.

Lock by the clock, not the timeline rumor. If your platform allows window-by-window locks, use them — especially with a morning London game on the board.