Entering Week 10, five teams — Green Bay (7-2), New England (8-1), New Orleans (7-1), San Francisco (8-0) and Seattle (7-2) — have at least seven wins, the most through the first nine weeks since the 1990 season (five teams). In total, 10 teams have at least six victories, the most through the first nine weeks of a season since 1986 (11 teams).

For the first time in NFL history, San Francisco (8-0) is the league’s last remaining undefeated team at least eight games into a season. The 49ers, which finished last season 4-12 and selected DL Nick Bosa with the second-overall pick in the 2019 NFL Draft, is off to its best start since opening 10-0 in 1990. This week, the 49ers host a divisional contest with key playoff implications against Seattle on Monday Night Football (8:15 p.m. ET, ESPN).

On Sunday, when Baltimore meets Cincinnati (1:00 p.m. ET, CBS), the Ravens (6-2) have an opportunity to match their best start in franchise history (7-2 in both 2006 and 2012). On the other sideline, quarterback Ryan Finley will make his first NFL start. Finley will become the sixth rookie to make his starting debut this season, joining Arizona’s Kyler Murray, Jacksonville’s Gardner Minshew, Pittsburgh’s Devlin Hodges, the New York Giants’ Daniel Jones and Washington’s Dwayne Haskins.

Through the first nine weeks, 110 of 135 overall games (81.5 percent) have featured at least one quarterback under the age of 27, the most at this point in a season in league history. In total, quarterbacks under age 27 have started 146 games and recorded 76 wins (52.1 percent), both the most starts and wins by quarterbacks under the age of 27 through the first nine weeks of a season since at least 1970.

See the full Week 8 preview.