The rushing attack was one of the bright spots for the Cincinnati Bengals in . Joe Mixon finally got going, finishing with 78 yards on 14 carries.He averaged a season-high 5.6 yards per carry. Samaje Perine had a good day running the ball as well, managing 17 yards on three carries (5.7 yards per carry).There are a few root causes for this newfound effective run game.The Ravens were selling out to stop explosive plays through the air, Mixon got extra rest from the mini bye week, and most importantly, a schematic shift for the Bengals.The Schematic ShiftPrior to this game, the Bengals primarily utilized a zone blocking scheme. I have gone over wide zone in depth before, but the basic idea of these plays are that the offensive line will move the front of the defense horizontally to create lanes for the running back. This run scheme maximizes good athletes along the offensive line.The Bengals would dabble in some other runs, but they mainly tried to get to wide zone under center as their bread and butter. The i sue is that the horses up front had i sues blocking it because of their lack of athleticism, and they were unable to reap the rewards of the related under center play action as well. Knowing this run scheme was an i sue, the Bengals have slowly added more gap runs into their game plan and it finally reached a tipping point this past week.On their 18 runs (not including Joe Burrow runs), the Bengals ran 13 gap plays and 5 zone plays. This wholesale change is the first time that gap running has been a clear emphasis for the Bengals' offense. Against the Dolphins in the week prior, the Bengals had more gap runs (14) than zone runs (11), but overall it was a near 50/50 split prior to Sunday.Before the game against the Ravens, the Bengals ran zone run plays about 52% of the time and that number was decreasing every week. This nearly 50/50 split seemed to be somewhat of an identity crisis and hampered the run game. It seemed as if they only ran zone under center and only ran gap from the gun. Because of the identity i sues along with the lack of production from the zone portion of the run game, the switch to more gap run plays this past week is something that has needed to occur for weeks now.This is just scratching the surface of these concepts, but in general gap run plays are designed to attack downhill quickly and to push the defensive front vertically. This type of run scheme is better utilized when the offensive line is full of power but may lack some athleticism.Against the Ravens, the gap run plays went for about 5.6 yards per carry which is good, but that includes a few plays that were designed to reach the perimeter of the defense. When only considering the run plays that were designed to attack downhill, the Bengals reached 6.8 yards per carry. For comparison, the Bengals' zone run plays were only at 4.4 yards per carry and the wide zone concepts from under center were run at an abysmal 2.5 yards per carry. That 2.5 yards per carry is similar to what Mixon was running at prior to this week (2.7), which caused the dynamic shift in scheme.To get into more of the advanced statistics of how succe sful this run game was last week, the EPA/play (expected points added per play) on all Bengals' runs this week was a staggering 0.15 EPA per play. Mixon in particular was at a blistering 0.24 EPA per play on the ground. To add context to these numbers, the Cleveland Browns No. 1 rushing attack averages 0.157 EPA per play, and the Buffalo Bills and Kansas City Chiefs are the only pa sing offenses to average more EPA per play than Mixon did on the ground this past week.If the Bengals can keep up this level of dominance on the ground, then they will complement their aerial a sault well with one of the leagues best shotgun run games. Lets dig a little deeper into just exactly what the Bengals are doing on the ground and how it works.The Bengals Gun Run AttackOne of the primary benefits of running from the gun are the light boxes that you will naturally face. For the Bengals, there were only four instances of running into a one high shell out of 15 gun runs. That means that on 11 runs from the gun this week, the Ravens had one le s defender than the Bengals had gaps. This isnt something new though, because the Bengals have been getting these light boxes the entire year from the gun. The i sue until now has been punishing these boxes, but now the Bengals have found a way to attack these light defenses on the ground.There were three gap concepts that the Bengals utilized this week to attack the Ravens downhill from the gun: duo, iso, and trap. Lets dig into each one of these concepts.The duo concept is e sentially power without a puller.The Bengals almost always run their gun duo as a same side concept, meaning that it is designed to attack the same side as the offset running back. The offensive line is going to get a pair of double teams against this even over front. One on the 2i and one on the 3 technique. Those double teams are going to work back to the two linebackers with Mixon reading the play side or MIKE linebacker. If the MIKE fills, then Mixon should bounce, but if the MIKE stays or works outside, then Mixon should hit this up the middle. There is a seldom-used third read (for most teams) being a cutback toward the opposite side, but thats exactly what Mixon uses on this play.The MIKEs first steps are to the outside so Mixon responds by pre sing vertical and looking to hit this right down broadway. The i sue is that the tight end gets pushed into the hole and despite a good bump from the left tackle, the left guard has lost leverage against the 3 technique. Mixon then makes a decisive jumpcut to the backside of the play where Alex Cappa has just blasted the 2i about 5 yards backward before dumping him on his head. This incredible block combined with some good work from Tyler Boyd and a good initial drive from Lael Collins gives Mixon the room he needs to churn out positive yardage.This is another example of the Bengals running duo against an even over front. The result is also the same with a cut to the backside of the run for a nice gain. Mixon started to cut this play to the backside this week after weeks of trying to force it to the play side. It could be because of the team meeting he had with his offensive line or because he feels healthy enough to use his burst to cut to that side , but either way, its working. Watch as Mixon first pre ses vertically, but then can feel how bunched up everything has become leading to a cut backside.To show a different read, here is Mixon making a bounce read from duo:Check out the difference in the blocking and how he is able to gain the edge. Its topped off with a vintage finish from Mixon as he makes the corner mi s and plows forward for additional yardage.As evident from the film, this concept is an effective way for the Bengals to attack defenses