Matt Breida ran 83 yards for a touchdown on San Francisco’s first play from scrimmage, Baker Mayfield was harassed into his worst game as a pro, and the 49ers stayed unbeaten for their best start in nearly 30 years, beating the Cleveland Browns 31-3 on Monday night. Tevin Coleman added a 19-yard score as part of a dominant ground game on a day when quarterback Jimmy Garoppolo passed for 181 yards

The Browns (2-3) are headed the opposite direction after losing two of three, with fresh concerns about their young quarterback. Mayfield had a horrible game. The No. 1 overall pick last year, Mayfiaeld completed 8 of 22 passes for a career-low 100 yards, had a 13.4 passer rating, threw two interceptions, fumbled twice and was sacked four times before being pulled in the fourth quarter.

It’s the first time in Mayfield’s 18 career starts that he failed to throw a touchdown pass.