How PFF graded Purdy, 49ers in prime-time loss to Lions

SANTA CLARA — The 49ers came out firing on all cylinders in the first half of their loss to the Detroit Lions on Monday, but couldn't maintain the production through all four quarters. San Francisco's PFF grades from the 40-34 defeat show high-powered performances from rookie wide receiver Ricky Pearsall, who had a much-anticipated breakout performance, and George Kittle, who arguably is one of the best tight ends the NFL has ever seen. Brock Purdy was largely well protected through much of the game behind a patchwork offensive line, allowing the quarterback to place the ball downfield with several explosive plays. The running game was less productive, even with Isaac Guerendo's return and Deebo Samuel and Pearsall's contributions. As a group, including scrambles from Purdy and Josh Dobbs, the offense ran the ball only 18 times for 75 yards, or 4.2 yards per carry. On the defensive side of the ball, the theme was inconsistency. While there were several stops, pass breakups and tackles for a loss made by the defense, the group still allowed Lions running back Jahmyr Gibbs to gain 117 yards and a touchdown on 18 carries. Lions quarterback Jared Goff was sacked twice, but he...