49ers achieve historic DVOA start through four games

The San Francisco 49ers are 4-0 to start the season, boasting a 54.8 percent DVOA, ranking among the top 11 teams since 1977. Their passing offense is particularly strong with an 89.4 percent DVOA, third-best in the same period. Quarterback Brock Purdy has thrown for 1,007 yards, 11 touchdowns, and one interception without being sacked. This exceptional performance puts them in a favorable position as they aim for postseason success, although injury concerns persist. Each of the top teams historically with similar DVOA through four games has had significant postseason success, adding context to the 49ers' promising start.

• 12:00 AMYahoo Sports — 49ers' hot start ranks among the NFL's best since 1977