How PFF grades Brock Purdy, 49ers in straight-up win over Seahawks

The 49ers’ PFF grades show where they excelled the most in their dominant 31-13 win over the Seattle Seahawks on Thanksgiving evening.

San Francisco’s defense held quarterback Geno Smith and the Seahawks’ offense to three touchdowns and 56 total yards in the first half. At the end of regulation, the Seahawks had managed just 14 first downs and 220 net yards — 88 on the ground and 132 receiving.

The 49ers’ defense registered 25 total pressures on Smith, who completed just 18 of his 27 attempts for 180 yards. The quarterback was sacked six times for 48 yards, reducing his net passing by more than 26 percent.

Brock Purdy couldn’t manage the perfect passer rating like he did in Week 11, but outside of the pick-six at the start of the second half, it was a productive day. The 49ers quarterback completed 21 of 30 attempts for 209 yards, an interception and a touchdown.

“They had us in disguise,” Shanahan said of Purdy’s pick-six. “They were doing some weird disguises that got us checked. It was a double call. I shouldn’t have put that on him. It obviously wasn’t the check we wanted. They got us in disguise. We ended up getting that tip.”

“It was an unfortunate play, but it doesn’t bother him at all. I came back, and I did a hell of a job shutting him down.”

Here are more highlights from the 49ers’ Week 12 PFF grades:

a crime

QB Brock Purdy – 75.8

Aaron Banks (toe) returns to the left side of the offensive line while John Feliciano moves to right guard in the absence of Spencer Burford (knee). With this new combination, Purdy was under pressure on 43.8 percent of his dropbacks.

When using play action, Purdy completed 7 of 9 attempts for 103 yards, 1 touchdown and a 151.4 passer rating. Without running a play, the quarterback connected on 14 of 21 attempts for 106 yards, one interception and a 58.8 passer rating.

Purdy’s production on deep passes was down somewhat from the club’s Week 11 win, but he still completed 2 of 5 attempts of 20 or more yards downfield. The Iowa State product connected on all 15 of 17 short passes of nine yards or less and 4 of 6 intermediate throws from 10 to 19 yards down the field.

RB Christian McCaffrey – 84.3

McCaffrey had another great performance as 69 of his 114 yards came after contact. Eight of his 19 carries resulted in a touchdown or first down. His total of 56 first downs of the season is 17 more than any other in the league. Washington Commanders ball carrier Brian Robinson is next in line with No. 39.

WR Deebo Samuel – 78.3

Samuel was the top target on offense as he scored seven of nine targets for 79 yards and recorded four carries for 15 yards and a touchdown on the ground. The wide back’s 43 yards after contact led all receivers.

WR Brandon Aiyuk – 67.3

Aiyuk caught two of his four targets Thursday night for 50 yards, but he showed how lethal he can be on the field. 40 of Aiyuk’s 45 receptions this season resulted in either a first down or a touchdown (88.9 percent)

Offensive line

LT Trent Williams – 79.0 overall grade, 86.5 pass blocked, (1 wheel)
LJ Aaron Banks – 52.7 overall grade, 56.2 pass blocks, (2 hurries)
C Jake Brindle – 64.7 overall grade, 52.8 pass blocks (1 hit)
RJ John Feliciano – 44.4 overall grade, 34.7 pass blocks, (four-hit wonder)
RT Colton McKevitz – Overall Grade 61.5, 55.3 Assists, (Three Wonders)

George Kittle was responsible for one of the 12 pressures allowed.

defense

CB Ambry Thomas – 90.2

Thomas’ 90.5 coverage grade was the team’s best mark. The third-year defensive back allowed just two catches on four targets for 16 yards while also recording a pass breakup and notching an interception.

CB Charvarius Wing – 74.2

Ward’s coverage grade of 77.1 was second only to Thomas. The six-year vet allowed just four goals on 10 targets for 44 yards and broke up three passes. Ward allowed Metcalf six catches for 14 yards.

LB Fred Warner – 88.5

The third-highest overall grade on defense was given to Warner, who scored twice up the middle on five blitzes. The All-Pro also recorded six total tackles, missed none and was targeted only once for seven yards.

Defense line

Nick Bosa – 89.7 overall, 86.7 pass rush (three sacks, two hits, four hurries and two run stops)
Javon Hargrave – 57.4 overall, 73.6 hurries (2 sacks, 1 hurried)
Aric Armstead – 82.2 overall, 63.7 pass rushing (2 sacks, 1 hurried and 2 run stops)
Javon Kinlaw – 60.9 overall, 59.2 hurl (one hit, one wheel)
Clellin Ferrell – 68.7 overall, 63.5 rushing bass (2 wheels)
Chase Young – 64.4 overall, 69.4 pass rush (1 rush)
Kevin Givens – 63.9 overall, 74.4 pass rushing (1 sack)
Randy Gregory – 66.3 overall, 62.3 pass rush (1 hurry)

Smith was under pressure on 47.2 percent of his dropbacks. Smith completed just 3 of his 9 attempts for 61 yards, one interception and an 18.5 passer rating on throws of 10 or more yards downfield.

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