Vikings are NFL's last unbeaten team as Chiefs, 49ers lose

The Minnesota Vikings are the NFL's only unbeaten side after week seven. The Kansas City Chiefs lost at defending champions the Seattle Seahawks, whose defence held Kenneth Walker to 36 yards on 14 carries, while Jaxon Smith-Njigba had 150 receiving yards and a touchdown. The San Francisco 49ers also suffered their first defeat; the Browns and Broncos won big.