The San Francisco 49ers suffered a disappointing 23-17 loss to the Minnesota Vikings, marked by defensive lapses and offensive struggles, including a critical 97-yard touchdown pass from Sam Darnold to Justin Jefferson. Former players Richard Sherman and Donte Whitner criticized the team's defensive strategy, particularly the lack of coverage on Jefferson, who they argued should have been double-teamed. The 49ers' offense struggled significantly, converting only 2-of-10 third downs and failing on two fourth-down attempts. Despite Brock Purdy's 319 passing yards, he threw an interception and was sacked six times, contributing to the team’s inability to capitalize on opportunities. The Vikings, led by Darnold and a resilient defense, managed to hold the 49ers at bay and recovered an onside kick to secure the win. This defeat has raised concerns about the 49ers' performance after their strong start to the season.