Yoop wrote: ↑05 Apr 2022 07:50
Green Bay Packers Run Game Doesn’t Generate as many Big Plays in 2021
In 2020, the Packers would average 4.8 yards per rush as a team, which ranked sixth in the NFL. This year, they would average 4.2 yards, and that ranked 21st. We also didn’t see the big plays being generated as frequently either. Sharp Football defines an explosive run as a play of 10 or more yards on the ground. Last season, Green Bay had an explosive run rate of 11 percent and generated 53 explosive runs. This year, those figures fell to just eight percent and 36.
On first down, Green Bay would find similar success rushing the ball, averaging 4.7 yards per carry this season compared to 4.6 in 2020. But on second and third downs is where we really saw the difference. The Packers would average 3.6 yards per rush on second down this season and 4.4 on third down. A season ago, however, they would average 4.8 yards per attempt on second down — 1.2 yards more than this season — and 5.5 yards on third downs.
https://dairylandexpress.com/2022/01/27 ... -plays-202
I'd like to highlight a different part of that article:
Now, there is very rarely ever one reason behind why something happens in football, but I have to imagine all of the movement and injuries along the Green Bay offensive line didn’t help. Including the playoffs, the Packers utilized seven different offensive line combinations over the course of the season, and they ranked 23rd in run-blocking by PFF’s grading system. For added context, the Packers finished seventh in 2020.
For transparency purposes, while PFF was never a huge fan of Green Bay’s run-blocking, ESPN had the Packers ranked fourth in their run-block win rate metric. Football Outsider’s DVOA metric also had Green Bay’s rushing offense as a top-10 unit.
Again, I’ll reiterate just as I have all season long, this Green Bay Packers run game was still effective, for the most part, but I think we can all agree that it wasn’t at the same level that it was at a season ago. I also believe those high rankings from ESPN and Football Outsiders are, in part, a testament to just how good Jones and Dillon are.
According to PFF ($$), both would finish inside the top-20 out of 64 eligible running backs in yards after contact average, with Jones also finishing 13th in missed tackles forced and Dillon 22nd–showcasing their abilities to make plays on their own.
I'm intrigued by this, combined with the first part of your quote:
In 2020, the Packers would average 4.8 yards per rush as a team, which ranked sixth in the NFL. This year, they would average 4.2 yards, and that ranked 21st. We also didn’t see the big plays being generated as frequently either. Sharp Football defines an explosive run as a play of 10 or more yards on the ground. Last season, Green Bay had an explosive run rate of 11 percent and generated 53 explosive runs. This year, those figures fell to just eight percent and 36.
So if PFF differed from ESPN and Football Outsiders, there must be something in the methodologies that helps explain it. I know, for instance, that Football Outsiders' run blocking metric cuts off yards per carry beyond a certain number of yards because beyond the second level, the play's outcome has nothing to do with run blocking.
ESPN's run block win rate, for its case, has this to say: "First, each block is identified -- that's the easy part. Next, our system determines whether the defender was able to defeat the block. It does this by using a large set of rules based on relative distance to the runner, relative velocity to the runner and many other more complicated measures. A defender doesn't have to make the tackle to win his block. He can penetrate the backfield to cause a disruption, contain the runner behind the line of scrimmage, or squarely fill his assigned gap to earn a win. If a blocker allows his defender to win, he is debited with a loss."
So both of those metrics focus almost entirely on what happens near the line of scrimmage. I don't know how PFF calculates their run blocking metrics, because the list linked is behind a paywall.
But it occurs to me that if the yards per carry declined, big plays declined, while the Football Outsiders and ESPN metrics focused on the first level blocking remained high, that the issue was NOT that the yards before contact was too low and the blocking was bad, but actually that the explosive plays on the next level, into the secondary, were less successful. Or simply that we had less big play luck (for instance a perfectly executed play that sprung a 25 yard TD run that would have been a 60-yard TD run had we simply been on the opposite 40 yard line instead of the 25).
But I'm not sure that PFF's run blocking grades alone are enough to dissuade me from the ESPN, FO, and anecdotal evidence that the decline of the run game metrics stemmed from blocking up front rather than from the lack of more explosive plays farther downfield.
It may mean that we are missing more of those second level blocks on LBs, which would certainly be an OL (and specifically, usually, an OG) issue. But it doesn't indicate that we're getting fewer yards before contact. Let me look to see; I think football outsiders actually tracks yards before contact and is publicly available....
Ok, not quite. But let's look at what football outsiders found.
First, here are some definitions:
Teams are ranked according to
Adjusted Line Yards. Based on regression analysis, the Adjusted Line Yards formula takes all running back carries and assigns responsibility to the offensive line based on the following percentages:
Second Level Yards: Yards which this team's running backs earn between 5-10 yards past the line of scrimmage, divided by total running back carries.
Open Field Yards: Yards which this team's running backs earn more than 10 yards past the line of scrimmage, divided by total running back carries.
The Packers in 2021 ranked 3rd in adjusted line yards, meaning that the bulk of their rushing success happened inside 5 yards from the line of scrimmage. This is further exemplified by the other rankings: Second level yards (5-10 downfield), they ranked 13th. Open field yards (yards beyond 10 yards of a carry), they ranked 20th. This jives perfectly with the original article's focus on the reduction in big plays.
It's also worth noting that the Packers' OLine again ranked 3rd in "stuff rate," meaning they had the 3rd lowest percentage of their runs go for 0 or negative yards; and 6th in power rank, meaning they had the 6th-highest success rate on converting 3rd or 4th and 2 or less to go.
All signs point toward the Packers' run blocking being, in fact, a strength of the team last year. The injuries and rookies had a greater impact on the pass game, where Newman for sure struggled, and Nijman was solid but a downgrade from Bakhtiari or Jenkins.
But even there you see that Football Outsiders has the Packers ranked 6th in "Adjusted sack yards," their metric for pass blocking. While ESPN's pass block win rate (which calculates wins and losses on blocks for the first 2.5 seconds) ranked 5th.
So we have to get into PFF's paywall to really see what PFF and Andy Herman and Go Pack Go have against our OL performance. But what I like about both ESPN and Football Outsiders is that their stats are outcome-based, and thus FAR less subjective. Football Outsiders, really, takes no subjectivity aside from where it sets the lines. It simply states that x% of run plays were 0-negative; and then separates out runs by their length. ESPN still determines "winners and losers" of blocks, but that is definitely less subjective than assigning a grade to a player without knowing their assignment. I certainly agree with the eye test and some numbers that the line was not as good in 2021 as it was in 2020, but that's a given, since we lost a Pro Bowl LT and a Pro Bowl C and filled the gaps with rookies.