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49ers defensive snap count: Kenneth Acker replaced in lineup by Dontae Johnson

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The San Francisco 49ers offensive was inadequate for much of Sunday's loss to the Cincinnati Bengals, but the defense put together a decent game. They continue their Jekyll-and-Hyde performances between home and road games. It is no longer a surprise to see this, but it is no less frustrating. The snap count does not reveal everything, but we can make some pretty specific inferences based on it. We looked at the offensive snap count earlier, and now we'll look at the defensive side of the ball (Gamebook PDF).

Defensive Line

Pos Player Plays % Stats
DT Quinton Dial
46
72% 4 tackles, 2 assists
DT Ian Williams
44
69% 6 tackles, 1 sack, 1 tackle for loss, 1 QB hit, 1 fumble recovery, 1 neutral zone infraction penalty
DT Arik Armstead
30
47% No stats
DT Mike Purcell
28
44% 1 tackle
DT Tank Carradine 13
20% No stats
DT Tony Jerod-Eddie 10
16% No stats

The defensive line stats are fairly low thanks in large part to NaVorro Bowman and Gerald Hodges having big days. Of course, Ian Williams had a strong performance. Tank Carradine only finished with 13 snaps, but was out on the field as a "starting" edge rusher in the team's early nickel defense. I imagine the Bengals focus on the run resulted in the limited work. I could see Tank getting a lot of work this coming weekend when the 49ers travel to face the Lions.

Outside Linebackers

Pos Player Plays % Stats
OLB Ahmad Brooks 56 88% 3 tackles, 2 assists, 1 sack
OLB Eli Harold
31 48% 3 tackles, 1 tackle for loss, 1 QB hit
OLB Corey Lemonier
28 44% 1 tackle, 1 assist, 1 unnecessary roughness penalty

Aaron Lynch was inactive for the second straight game, which meant we got to see more of the Eli Harold/Corey Lemonier rotation. Harold got slightly more snaps, a week after Lemonier got a sizably larger number of snaps. Whether or not Lynch returns in Week 16, I have no idea what to expect from this rotation.

Inside Linebackers

Pos Player Plays % Stats
ILB NaVorro Bowman 64 100% 8 tackles, 4 assists, 1 tackle for loss, 1 defensive pass interference penalty
ILB Gerald Hodges
54 84% 9 tackles, 1 assist

It was a work-horse day for these two. They were among the most active players on the 49ers defense, thanks to the Bengals focus on the run game. Bowman is now tied with D'Qwell Jackson for the league lead with 136 tackles.

Cornerbacks

Pos Player Plays % Stats
CB Tramaine Brock 64 100% No stats
CB Dontae Johnson 53 83% 1 tackle
CB Jimmie Ward
37
58% 4 tackles, 1 assist, 1 sack, 2 tackles for loss, 1 QB hit, 1 pass deflection
CB Kenneth Acker 9 14% 2 tackles
CB Keith Reaser 9 14% No stats

This is an odd one. The 49ers decided to replace Kenneth Acker with Dontae Johnson in the starting lineup. This is the first time both have been active and Johnson ended up with more snaps. I'm not sure what's taken so long to get Johnson more work opposite Tramaine Brock, but it will be something to watch next week against the Lions.

Safeties

Pos Player Plays % Stats
S Eric Reid 64 100% 4 tackles, 1 sack, 1 tackle for loss, 1 QB hit
S Jaquiski Tartt
64 100% 2 tackles

It will be interesting to see what happens this offseason when Antoine Bethea returns to full health. Tartt has been inconsistent for stretches, but he can be a play-maker for this defense. Once Bethea is healthy, a release is not entirely out of the realm of the possible.