The entered Week 6 as one of two unbeaten teams left in the . They left with their first lo s of the 2023 campaign, and they have the to thank for it, even with Cleveland starting backup quarterback in place of an injured .San Francisco scored first on Sunday, with running back tying an NFL record for most consecutive games with a scrimmage touchdown, then went up 10-0 despite losing wide receiver to a shoulder injury. But that was about it for Kyle Shanahan's offense Sean Doolittle Jersey against Jim Schwartz's defense, which limited QB to Brian Dozier Jersey 125 yards through the air to fuel a 19-17 upset.The Browns weren't world-beaters with the ball in their hands Sunday, as Walker finished just 18 of 34 for 192 yards and two interceptions. Cleveland also converted just 3 of 13 third-down tries, even with topping 100 yards receiving and the running duo of and combining for more than 130 yards. But it didn't matter much, as the Browns limited McCaffrey to 3.9 yards per carry and kept Purdy uncomfortable in and around the pocket.Cleveland was a 9.5-point underdog on Sunday.Officials may have aided the Browns' victory, flagging San Francisco twice on Cleveland's go-ahead fourth-quarter drive for debatable penalties in the secondary, including a defensele s-receiver hit by . But the 49ers couldn't capitalize on a drive into Browns territory during the ensuing po se sion, with kicker sending a 41-yard game-winning field-goal try wide right. Pick Six Brandon Kintzler Jersey Newsletter Crafted By The Best NFL Experts Get the day's big stories + fun stuff you love like mock drafts, picks and power rankings. I agree to receive the "Pick Six Newsletter" and marketing communications, updates, special offers (including partner offers), and other information from CBS Sports and the Paramount family of companies. By pre sing sign up, I confirm that I have read and agree to the and acknowledge Paramount's . Tanner Rainey Jersey Please check the opt-in box to acknowledge that you would like to subscribe. Thanks for signing up! Keep an eye on your inbox. Sorry! There was an error proce sing your subscription. Walker is now 5-3 as an NFL starter despite only taking over as the Browns' temporary QB1 this week. Rookie started in relief of an injured Watson in Week 5, but Walker, who previously started in the XFL and for the , was promoted from the practice squad to give Cleveland a more Tres Barrera Jersey experienced fill-in.