San Francisco 49ers: Week 13 position grades and analysis from win over Bears

CHICAGO, IL - DECEMBER 03: Quarterback Jimmy Garoppolo #10 of the San Francisco 49ers looks to pass the football in the first quarter against the Chicago Bears at Soldier Field on December 3, 2017 in Chicago, Illinois. The San Francisco 49ers defeated the Chicago Bears 15-14. (Photo by Kena Krutsinger/Getty Images)
CHICAGO, IL - DECEMBER 03: Quarterback Jimmy Garoppolo #10 of the San Francisco 49ers looks to pass the football in the first quarter against the Chicago Bears at Soldier Field on December 3, 2017 in Chicago, Illinois. The San Francisco 49ers defeated the Chicago Bears 15-14. (Photo by Kena Krutsinger/Getty Images) /
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CHICAGO, IL – DECEMBER 03: Jordan Howard #24 of the Chicago Bears is dropped by Eli Harold #57 of the San Francisco 49ers at Soldier Field on December 3, 2017 in Chicago, Illinois. The 49ers defetaed the Bears 15-14. (Photo by Jonathan Daniel/Getty Images)
CHICAGO, IL – DECEMBER 03: Jordan Howard #24 of the Chicago Bears is dropped by Eli Harold #57 of the San Francisco 49ers at Soldier Field on December 3, 2017 in Chicago, Illinois. The 49ers defetaed the Bears 15-14. (Photo by Jonathan Daniel/Getty Images) /

49ers Defensive Grades

If the 49ers’ mindset in Week 13 was to shut down Bears running back Jordan Howard and force quarterback Mitchell Trubisky to throw, they did a good job.

Howard was limited to a mere 38 yards on 19 carries — an average of just 2.9 yards per attempt.

This did open up things for Trubisky to have a relatively nice game under center, although he wasn’t much of a difference maker.

Defensive Line

The 49ers still lack a solid pass rush, and Week 13 was no different. San Francisco managed just two sacks, and one of those by linebacker Eli Harold was a gift, as Trubisky fumbled the snap and went down on his own.

But the other sack was credited to EDGE Elvis Dumervil, who leads the defense with 5.5 sacks now.

Rookie defensive tackle Solomon Thomas could have added another on the play below, but he took a slightly off angle towards an escaping Trubisky:

These are the kinds of plays you’d like to see Thomas finish, which kind of describes the day the Niners D-line had.

Grade: C+

Linebacker

Rookie linebacker Reuben Foster led the team with seven tackles, which isn’t much of a surprise. One particular play on third down in the first half prevented the Bears from picking up a first down towards the sideline.

Any slower linebacker would have given up the first down.

CHICAGO, IL – DECEMBER 03: Daniel Brown #85 of the Chicago Bears carries the football against Reuben Foster #56 of the San Francisco 49ers in the fourth quarter at Soldier Field on December 3, 2017 in Chicago, Illinois. The San Francisco 49ers defeated the Chicago Bears 15-14. (Photo by Joe Robbins/Getty Images)
CHICAGO, IL – DECEMBER 03: Daniel Brown #85 of the Chicago Bears carries the football against Reuben Foster #56 of the San Francisco 49ers in the fourth quarter at Soldier Field on December 3, 2017 in Chicago, Illinois. The San Francisco 49ers defeated the Chicago Bears 15-14. (Photo by Joe Robbins/Getty Images) /

Interestingly enough, Pro Football Focus gave Foster a 74.6 game grade, although citing he had to clean up a lot of the missed tackles and assignments up front.

Grade: B

Secondary

No Bears receiver broke over 40 yards, which is a good sign for San Francisco’s developing secondary.

In his first game back from a thumb injury, seventh-round draftee Adrian Colbert had himself a game with three tackles, including a hard hit in the third quarter. And fellow safety Eric Reid finished second on the defense with four tackles, including one for a loss.

Fill-in cornerback Greg Mabin did give up an eight-yard touchdown completion to Bears wideout Dontrelle Inman, but that was the only major gaffe this unit suffered.

Grade: B+