The Los Angeles Rams entered the 2026 NFL season with expectations of fielding one of the league's most formidable defenses, but their latest performance revealed a troubling weakness. During Monday night's 37-34 overtime loss to the Buffalo Bills, Los Angeles surrendered 234 rushing yards and struggled to contain quarterback Josh Allen. The result raised serious questions about the Rams’ run defense and its ability to handle offenses that attack with multiple rushing threats. With a crucial Week Six matchup against the Arizona Cardinals approaching, defensive coordinator Chris Shula faces an important challenge that could shape the Rams' season.
Rams Defense in 2026 Exposed by Josh Allen and Bills
The Rams defense entered Monday Night Football looking to slow down one of the NFL's most dangerous quarterbacks. Instead, Allen repeatedly exploited openings in Los Angeles' defense and turned potential passing situations into significant gains on the ground. Buffalo finished with 234 rushing yards, averaging 6.3 yards per carry while controlling key stretches of the game. Those numbers exposed a weakness that could become increasingly costly if opposing offenses find similar opportunities.
Allen was particularly damaging because of his ability to extend plays and punish defenders who lost containment. The Bills quarterback rushed for 121 yards on just 10 carries, averaging an impressive 12.1 yards per attempt. His production forced Los Angeles to account for an additional rushing threat on nearly every possession. Even when the Rams generated pressure, Allen's mobility created opportunities that conventional pass-rushing approaches could not always eliminate.
Buffalo running back James Cook also contributed to the Rams’ defensive struggles with 111 rushing yards and two touchdowns on 25 carries. His success prevented Los Angeles from focusing exclusively on Allen and created a difficult balance between defending designed runs and quarterback scrambles. When the Rams attempted to contain Buffalo's quarterback, Cook remained capable of finding space between the tackles. The combination ultimately allowed the Bills to dictate important portions of the game despite Los Angeles producing several defensive stops.
Why the Rams’ Run Defense Struggled Against Buffalo
The most concerning aspect of the performance was not simply the total rushing yardage allowed. It was the variety of ways Buffalo attacked the Rams, forcing defenders to make difficult decisions. Allen's mobility challenged the defense along the edges, while Cook provided a more traditional rushing threat through the interior. That combination exposed the importance of maintaining gap discipline and preventing defenders from abandoning their assignments.
Containing a mobile quarterback requires a different approach than pressuring a traditional pocket passer. Defensive linemen must create pressure without opening escape lanes, while linebackers need to recognize when a quarterback is preparing to run. Against Buffalo, Los Angeles struggled to maintain that balance consistently enough to prevent explosive gains. Allen's 121 rushing yards demonstrated how quickly a dangerous quarterback can punish even brief breakdowns in defensive positioning.
The Rams also faced problems when Buffalo established favorable blocking angles at the line of scrimmage. Cook's ability to find openings kept the offense productive without requiring Allen to carry every possession. When defenders were forced to react to multiple rushing possibilities, Buffalo could exploit hesitation and create additional yardage. For Shula, correcting those issues will require more than simply asking individual players to make better tackles.
The performance was especially disappointing because Los Angeles invested heavily in building a defense capable of competing with elite offenses. The team's Super Bowl-caliber defense emphasized talent, versatility, and the ability to pressure opposing quarterbacks. Those qualities remain important, but the Buffalo game showed that a strong pass rush cannot compensate for inconsistent rushing assignments. If the Rams want their defense to meet preseason expectations, stopping the run must become a more reliable part of their identity.
Chris Shula Faces an Important Defensive Test Before Week Six
Chris Shula now faces the challenge of correcting the Rams’ defensive struggles without abandoning the aggressive approach that has produced positive results. Los Angeles has demonstrated the ability to pressure quarterbacks and disrupt passing offenses throughout the early portion of the season. However, aggressive defensive calls can create vulnerabilities when opponents recognize pressure and exploit vacated running lanes. The key will be finding a balance between attacking the quarterback and maintaining the discipline necessary to stop the ground game.
One possible adjustment is to place greater emphasis on defensive containment rather than sending additional rushers into the backfield. That approach could help prevent quarterbacks from escaping outside the pocket and creating explosive plays. Shula may also need to reconsider how his linebackers react to run-pass situations, particularly when offenses use movement or misdirection. The goal should be to force opponents into predictable situations without sacrificing the pressure that makes Los Angeles dangerous.
The Rams still have experienced defensive playmakers capable of helping the unit recover. Aaron Donald provides a disruptive presence along the defensive line, while Kobie Turner offers additional strength against interior rushing attacks. Byron Young gives Los Angeles another option for generating pressure from the edge, and the secondary has enough talent to support a more disciplined defensive approach. The challenge is making those individual strengths work together when opponents attempt to establish the run.
There were also encouraging defensive moments against Buffalo that should not be overlooked. Linebacker Nate Landman forced a Cook fumble in overtime, and Donald recovered the football to give Los Angeles an opportunity to win. That sequence demonstrated the defense's ability to force a critical turnover despite struggling against the run. Unfortunately, the Rams could not capitalize on the possession, and Buffalo eventually secured the victory.
Rams Cardinals Week Six Matchup Could Reveal Whether the Problem Is Fixed
The Rams-Cardinals Week Six matchup arrives at an important point in Los Angeles' season. After falling to 2-3, the Rams cannot afford to let their defensive problems continue against another NFC West opponent. Arizona enters the matchup with a 1-4 record and will be looking for opportunities to exploit the weaknesses Buffalo exposed. Although the Cardinals present a different offensive challenge, Los Angeles must demonstrate that its run defense can respond.
Arizona does not have a quarterback with Allen's exact combination of size, power, and explosiveness. Nevertheless, the Cardinals can still test the Rams through their running backs, offensive formations, and play-action concepts. If Los Angeles continues allowing opponents to establish productive rushing attacks, Arizona could find ways to sustain drives and keep Stafford's offense off the field. Preventing that outcome will require disciplined tackling, stronger gap control, and better execution on early downs.
The Cardinals are also dealing with a significant offensive change after agreeing to trade wide receiver Marvin Harrison Jr. to the Houston Texans. That development gives Los Angeles an unexpected advantage entering the divisional matchup. However, Arizona's loss of a receiving threat does not automatically solve the Rams' defensive problems. In fact, the Cardinals could place additional emphasis on their rushing attack as they adjust to Harrison's departure.
That possibility makes the matchup particularly interesting for Shula and his defensive staff. Arizona may attempt to establish the run early, especially after watching Buffalo generate 234 rushing yards against Los Angeles. The Rams must be prepared to stop those attempts without allowing the Cardinals to create explosive passing opportunities through play action. A strong performance against Arizona would help demonstrate that the Buffalo game was a correctable breakdown rather than the beginning of a larger defensive trend.
Rams Defensive Struggles Could Complicate the NFC West Race
The Rams' defensive concerns carry consequences beyond their upcoming matchup against Arizona. San Francisco has opened the 2026 season with five consecutive victories, creating an early challenge for the rest of the NFC West. Los Angeles entered the year hoping to compete for the division title, but its 2-3 start has reduced its margin for error. Continuing to surrender explosive rushing performances would make that challenge considerably more difficult.
The Rams' pursuit of the division depends on their ability to perform consistently against familiar opponents. NFC West games often require disciplined football because divisional rivals understand each other's personnel and tendencies. If Arizona identifies opportunities to attack the same weaknesses Buffalo exploited, Los Angeles could find itself in another difficult contest. That makes correcting the run defense an immediate priority rather than a problem that can wait until later in the season.
Los Angeles has enough offensive talent to compete with strong opponents, as Matthew Stafford and his receivers demonstrated against Buffalo. The Rams produced 454 total yards and scored 34 points, giving themselves multiple opportunities to secure the victory. However, relying on the offense to overcome defensive breakdowns every week is not a sustainable approach. The Rams need their defense to complement Stafford's production rather than force the offense into repeated high-scoring battles.
Rams Must Fix Their Run Defense Before Problems Grow
The Rams' overtime loss to Buffalo revealed a weakness that opponents will undoubtedly examine as the 2026 season continues. Allowing 234 rushing yards, including 121 from Josh Allen, is a warning sign for a defense built to compete with the NFL's best teams. Shula has the personnel and experience to make adjustments, but the results must improve quickly. Sunday's matchup against Arizona provides the first opportunity to show that the defensive problems can be corrected.
The Rams will host the Cardinals at SoFi Stadium on Sunday, October 18th, with kickoff scheduled for 4:05 p.m. ET. Los Angeles has an opportunity to regain momentum and secure an important NFC West victory following its disappointing Monday Night Football defeat. A stronger performance against the run would help restore confidence in a defensive unit that entered 2026 with considerable expectations. Whether the Rams can make those adjustments may determine how quickly they recover from their uneven start to the season.
