The Las Vegas Raiders secured a victory in their season opener against the Miami Dolphins, but questions about quarterback Kirk Cousins' ability to consistently execute an effective downfield passing game are already emerging. These limitations could expedite the arrival of rookie quarterback Fernando Mendoza.

Cousins completed three touchdown passes in the game, demonstrating experience and accuracy on shorter throws. However, on passes traveling 10 or more yards downfield, he completed only one of seven attempts, with two interceptions. Head coach Klint Kubiak acknowledged the need for a more effective downfield passing game, stating "Yes" when asked if it was necessary.

The Raiders' offense can manufacture space and create favorable matchups to support Cousins on shorter passes, with players like Ashton Jeanty and Michael Mayer capable of turning modest throws into significant gains. Tight end Brock Bowers, upon his return, is also expected to contribute to this aspect of the offense.

However, opposing defensive coordinators may exploit Cousins' limitations. If they perceive that he cannot consistently threaten them deeper on the field, they could adjust their coverage, squeezing the space available for shorter passes. This could lead to safeties moving closer and linebackers playing shorter routes more aggressively, turning potentially easy completions into contested situations.

Such defensive adjustments could also impact the running game. If defenses can crowd the line of scrimmage without fear of a deep pass, it becomes more difficult for running backs like Ashton Jeanty to find room. The Raiders need sufficient credible threats beyond short routes to keep opposing defenses honest and prevent them from over-committing against the run or short passing game.

Raiders running back Ashton Jeanty during Sunday's season-opening win over the Dolphins

Kubiak emphasized the need to "chunk it deep," which includes intermediate passes delivered before safeties can close or cornerbacks recover. This requires arm strength not just for distance, but for getting the ball through windows before they disappear. At 38, Cousins may have a reduced margin for error in this regard. While factors like protection, separation, and decision-making play a role, his age makes the question of his deep-passing effectiveness unavoidable.

The absence of tight end Brock Bowers in the season opener was a factor, as his ability to create separation and attract coverage can significantly impact the offense. His return is anticipated to help, but it might also highlight any existing limitations in the quarterback's ability to deliver the ball to playmakers who can threaten defenses downfield.

Raiders quarterbacks Kirk Cousins and Fernando Mendoza

The initial strategy to start Cousins and allow Mendoza time to develop is logical. However, this approach should not persist regardless of on-field performance. Mendoza, a younger player with a stronger arm and higher draft pedigree, represents a potential future for the Raiders' offense. If Cousins' limitations continue to constrain the playbook, and if Mendoza demonstrates in practice that he can execute the necessary throws, the team may need to reconsider their quarterback situation.

The team and its fanbase have a history of quarterback struggles, making the prospect of a potential solution like Mendoza particularly significant. The standard for evaluating Mendoza should not be the elimination of all rookie concerns, while Cousins faces unlimited tolerance for limitations that restrict the entire offense. If the rookie's development and the offense's immediate needs align, a change at quarterback could become a viable option. Sunday's game did not necessitate such a change, but it established a storyline to monitor as the season progresses.