Rams PFF grades: Best and worst performers in Week 13 loss to Panthers

The Los Angeles Rams snapped their six-game winning streak on Sunday with a stunning 31-28 loss to the Carolina Panthers. The Rams were heavily favored against the Panthers but three turnovers by Matthew Stafford and two fourth-down touchdowns by Carolina were the difference in the game.

Pro Football Focus graded every player in the Rams' loss, showing who struggled and who played well against the Panthers. The offensive line played well, as did most of the Rams' skill players, but the defense showed glaring weaknesses in stopping the run and in coverage.

Here are some notable grades from PFF (min. 10 snaps).

Top 5 offense

• RB Blake Corum: 91.4

• RT Warren McClendon Jr.: 84.0

• WR Davante Adams: 83.2

• LG Steve Avila: 83.0

• WR Xavier Smith: 79.5

Corum was outstanding in this one, rushing for 81 yards on only seven carries. He broke off a 34-yard run and forced three missed tackles, while also powering his way into the end zone for a touchdown.

McClendon was perfect in pass protection with no pressures allowed. He also had an 82.4 run-blocking grade.

Adams caught two more touchdown passes and didn't have any drops, playing a good game from start to finish.

Avila gave up one sack but continues to dominate in the run game, earning a team-best 86.1 grade in that department.

Smith led the team with 82 yards receiving on only three catches, including a career-long 51-yarder.

Top 5 defense

• NT Poona Ford: 89.5

• DE Braden Fiske: 85.0

• OLB Byron Young: 84.5

• CB Josh Wallace: 75.1

• S Jaylen McCollough: 72.8

Ford was limited to only 19 snaps, likely due to a calf injury that popped up late in the week, but he was highly effective in the snaps that he did play. He had a team-best 83.3 run defense grade.

Fiske had three pressures on just 19 pass-rush snaps against the Panthers but missed one tackle.

Young had eight tackles and a sack, finishing with two total pressures on 17 pass-rush snaps.

Wallace made one tackle and wasn't targeted in coverage, allowing zero receptions and missing no tackles.

McCollough played significant snaps in this one, making four tackles with one stop and zero receptions allowed.

Bottom 5 offense

• RB Kyren Williams: 65.2

• TE Davis Allen: 61.2

• TE Terrance Ferguson: 58.7

• QB Matthew Stafford: 54.2

• WR Konata Mumpfield: 51.9

Williams didn't play poorly but he only forced one missed tackle on 13 attempts. He did average a healthy 5.5 yards per carry.

Allen caught just one pass for 4 yards, his lone target of the game.

Ferguson was targeted twice but didn't catch either one, failing to get on the same page as Stafford on a pass near the end zone.

Stafford had two turnover-worthy plays (pick-six and fumble) to go with two touchdown passes, finishing with by far his lowest grade of the season. His previous low was 68.2 against the Ravens.

Mumpfield wasn't targeted and had a 60.5 run-blocking grade.

Bottom 5 defense

• OLB Jared Verse: 55.1

• CB Cobie Durant: 46.4

• DL Tyler Davis: 45.7

• CB Emmanuel Forbes Jr.: 33.5

• DL Ty Hamilton: 29.1

Verse had four tackles, including three stops, and tied for the team high with three pressures.

Durant allowed five catches on six targets for 66 yards, coming back down to earth after playing exceptionally well in recent weeks.

Davis made five tackles but had no pressures and finished with a run defense grade of 46.8.

Forbes had a rough outing against the Panthers, giving up 110 catches on five catches (five targets), including two long touchdowns on fourth down. He also missed one tackle.

Hamilton made one tackle but had no pressures and had a run defense grade of 30.1, lowest on the team.

Other notables

• WR Puka Nacua: 77.3

• DT Kobie Turner: 69.3

• LB Nate Landman: 57.0

Nacua's grade was lower than expected after catching six passes for 72 yards, one of which was a spectacular one-handed grab for 31 yards. PFF did have him down for one drop.

Turner had one pressure and three tackles, playing as well as he normally does.

Landman finished with a grade below 60 for the first time since Week 9, struggling against the run like most of the defense did. He had one missed tackle, too.

This article originally appeared on Rams Wire: LA Rams PFF grades: Best, worst players in Week 13 loss to Panthers