After recording double-digit sacks in each season from 2012-14, Robert Quinn was bitten by the injury bug. He played just 17 games the past two years, recording nine sacks in his limited action.

He’s now four years removed from his 19-sack, All-Pro season in 2013 and looked like a shell of himself in the first 10 games of 2017. He had just 2.5 sacks, 19 tackles and was rarely generating pressure on opposing quarterbacks.

In the last four games, however, Quinn has been on fire. He has six sacks, two forced fumbles and 17 quarterback pressures since Week 12, emerging as a dynamic pass rusher once again for the Rams.

Don't sleep on Robert Quinn. The Rams' outside linebacker has six sacks over his last four games and, according to Pro Football Focus, has generated 17 quarterback pressures during that time. That's the same amount of pressures he had through the season's first eight games. — Alden Gonzalez (@Alden_Gonzalez) December 18, 2017

All of Quinn’s work comes from his right outside linebacker position, which is different than the 4-3 defensive end spot he’s played in recent years. You’d never know it was his first year at outside linebacker when watching film of his five-tackle, one-sack performance against the Saints, however.

He won easily on this rush against Terron Armstead, who’s one of the best young left tackles in the NFL when healthy. Quinn uses his speed to get to Armstead’s outside shoulder before dipping inside to beat the big lineman despite being held.

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You can see how Armstead gets his arm around Quinn just before the sack, but that wasn’t enough to stop No. 94 from getting to Drew Brees.

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A week later against the Cardinals, Quinn recorded two more sacks – his first multi-sack game of the year. Initially, his first sack of the game was ruled a tackle for loss after Blaine Gabbert botched the snap, but Wade Phillips helped get that ruling changed.

Quinn once again beats the left tackle outside with his speed before cutting it back inside to close off Gabbert’s running lane.

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Later in the game, Quinn had a sack fall into his lap after Samson Ebukam and Morgan Fox forced Gabbert out of the pocket. Quinn did a good job keeping his eyes on the quarterback to recognize he was trying escape up the middle.

Fast-forward one week and we get what very well might be Quinn’s best pass rush of the season. This time, it’s from a three-point stance as a defensive end. He sets up the left tackle with a fake outside before using his hands to chop down the blocker’s arms and break back inside for the sack.

Later in the game, Quinn got to Nick Foles. He wasn’t credited for a sack on this play, but he forced a bad throw to an offensive lineman and nearly caused a sack. Michael Brockers got to Foles initially, but Quinn helped clean it up before he could escape.

Against the Seahawks, Quinn showed off his unrelenting effort and motor. On his first sack, Quinn blows by Duane Brown outside, forcing Russell Wilson out of the pocket. Wilson tried to spin and use the ball to catch his balance, but it ultimately went down as a forced fumble for Quinn.

Later in the game, Quinn refused to give up on the play, looping all the way around Brown again to catch Wilson for a huge 12-yard loss.

Quinn may not have shown off elite pass-rushing moves in the past four games, but it’s obvious he still has the skill set to consistently get to the quarterback. You don’t generate 17 pressures in four games if you have no ability.

If the Rams can continue to get this sort of production out of Quinn, combined with Aaron Donald and Brockers inside, the pass rush will dominate. Los Angeles already ranks second in the NFL with 47 sacks, only four behind the Jaguars for the league-lead.

Quinn’s six sacks in four games are a big reason for that, and it’s no wonder the Rams are 3-1 in their last four.

“I think he’s played well pretty consistently throughout, but I think just the production [is just] being able to finish,” McVay said. “But he’s affected and influenced the quarterback all year for the most part. You’re very happy for Robert seeing him finish those plays and a come away with actually making the sacks.”