Good article on Derrick Henry (Extra Men in the Box)

What Henry is doing against a stacked box is truly remarkable. Ironically, Mark Ingram is ranked first using this metric. Teams were stacking the box against the Texans regularly to slow him down, Henry is second on the list. Another BAMA running back, Damien Harris, is ranked 5th. Click the link to see the full chart.

FiveThirtyEight.com

Opposing Defenses Show Us Just How Scary Derrick Henry Is
By Josh Hermsmeyer

Derrick Henry is on quite a tear. Through Week 7, the Tennessee Titans running back leads the league for the third time in as many years in rushing yardage. His 43 regular-season rushing touchdowns since 2019 are best in the league. And this past week against the Kansas City Chiefs, he even threw a touchdown pass, the second of his career.

In 2020, Henry became the first back to rush for 2,000 yards or more since Adrian Peterson in 2012.1 Through Week 7, Henry is averaging 124.1 yards per game. If he can keep up that pace, because of the expanded 17-game season, he would break Eric Dickerson’s single-season rushing record of 2,105 by almost 5 yards. And while extrapolating future production in this way is usually a terrifically bad idea, it’s not entirely out of the question: Last year, Henry averaged 126.7 yards per game over a 16-game season.

So how might a team’s respect for Henry’s dominance manifest itself, and what parts of his game strike the most fear into his opponents? The first problem is that he’s damn fast. Henry leads the NFL with 120 runs of 10 yards or more since 2019,2 and he has eight runs of 50 yards or more, also tops in the league. Henry can reach speeds of up to 21.8 miles per hour in the open field, so stopping him before he gets going is a point of emphasis for defenses.

Next is his size — a mere 6-foot-3, 247 pounds. Even if you can catch Henry, you still have to tackle him, which can be both challenging and dangerous, especially for lighter defensive backs. Since he entered the league in 2016, no running back has more yards after first contact than Henry. His average rushing yards before contact ranks 27th, further highlighting the need to gang-tackle and wrap him up early in the play.

The final problem for Henry’s opponents is perhaps his most dominating skill: He has the best stiff arm in the game. And getting the heavy hand from Henry isn’t just for show. The 2015 Heisman Trophy winner doesn’t often waste his signature move on mere 5-yard runs. Instead, on the league-leading 41 rushing plays since 2016 in which Henry utilized a stiff arm,3 he’s gained 460 yards after contact and has averaged over 15 yards per run.

With his freakish combination of size and speed joined with a stunning stiff arm, Henry rightly strikes terror in the hearts of defenses tasked with tackling him. So far this season, teams have done the smart and rational thing and brought extra help when facing the Titans.

Using our Defenders in the Box Over Expected metric, we calculated which running backs have seen the most stacked boxes in 2021 after adjusting for the probability of a play being a dropback.4 Plays on third-and-long rarely need extra defenders near the line of scrimmage, while plays on third-and-short in the red zone often have many defenders crowding the box. By adjusting for these situations, we can get a clearer picture of just how much respect a defensive coordinator has for each back.5
Of the backs that meet the minimum threshold for rush attempts,6 Henry ranks second, averaging over half an extra defender near the line of scrimmage over what we would expect given the game state.

Leading the league in rushing attempts, rushing yards, rushing touchdowns and stiff arms would be ample reason to heap praise upon Henry, but doing it while seeing stacked boxes with the frequency Henry has is remarkable. Rushing success is largely a function of field position and defenders in the box, but Henry is overcoming the odds with his unique athleticism.

And while we shouldn’t give Henry too much credit for enticing opposing defenses to overreact to things like play-action,7 there are ways that Henry affects a defense that could bolster his case in the MVP discussion. As Los Angeles Chargers head coach Brandon Staley pointed out earlier this year: “If you’re just a passing team, there’s a physical element to the game that the defense doesn’t have to respect.”