Chiefs, 49ers, Vikings Remain Unbeaten in NFL Week 4

The Kansas City Chiefs, San Francisco 49ers, and Minnesota Vikings have maintained their perfect starts to the 2026 NFL season, each securing victories in Week 4. These teams were among the five that entered the week with unblemished records, but only three emerged with their undefeated status intact after Sunday's games.

The Chiefs' victory was highlighted by standout performances, even as they dealt with injuries, including a serious leg injury to wide receiver Tyquan Thornton. Meanwhile, the 49ers and Vikings continued to showcase their dominance, keeping pace in their respective divisions as the season progresses.