Why J.J. McCarthy Needs Time to Develop Under Kevin O’Connell

A Foundation Delayed, But Not Derailed

J.J. McCarthy’s NFL journey has been anything but linear, and that’s precisely why the Minnesota Vikings are preaching patience. The young quarterback has only five career starts, a number that barely scratches the surface of the reps typically required to evaluate a developing passer. His growth timeline was disrupted before it ever truly began. During the 2024 preseason, McCarthy tore his meniscus, underwent surgery, and missed his entire rookie season. Instead of easing into the league, he spent Year 1 on injured reserve, recovering while other rookies logged thousands of practice snaps.

When he finally made his long-awaited debut in 2025, the expected learning curve was steep — and injuries continued to complicate it. A high ankle sprain early in the season cost him multiple games and limited his mobility even after he returned. Through five starts, McCarthy has posted 842 passing yards, six touchdowns, eight interceptions, and a 52.9 percent completion rate. The numbers paint the picture of a quarterback still learning how to survive — and eventually thrive — at NFL speed.

Head coach Kevin O’Connell believes the mechanics tell an even clearer story. He’s spoken extensively about McCarthy’s natural “violent leg whip,” describing it as a result of how quarterbacks generate torque and velocity.

“I think the violent leg whip can sometimes be… the ultimate disassociation between the lower and upper half,” O’Connell said. “It creates the torque that some guys put a lot of revolutions on the ball. And that would definitely be the category I’d put J.J. in.”

But O’Connell also emphasized that McCarthy’s best throws don’t always require maximum torque. “Those 80%, 85% throws that have plenty of velocity but better location… that friendliness for run-after-catch — that’s where the progress comes from.”

To bring all of this together, the Vikings are simulating as many real-game pockets as possible in practice. “The rush is full go,” O’Connell said. “We want it to feel as real as you possibly can… what it feels like in messy pockets.”

Why McCarthy’s Upside Still Outweighs the Early Struggles

Even in limited action, McCarthy has displayed the athleticism and improvisational instincts that made him a first-round pick. But O’Connell’s system is built on timing, rhythm. Proper footwork and standing tall in the pocket are traits that require repetition, confidence, and consistency.

McCarthy understands that himself. When asked how close he is to putting everything together, he offered a telling analogy: “I make the analogy of just a cork to come off a bottle… It’s one to three little things I need to change about my game that will make a huge difference.”

Those “little things” are tied directly to his base: staying balanced, climbing the pocket without drifting into danger, trusting his protection, and letting the timing of the play unfold instead of rushing the conclusion. When he plays within structure, the flashes are undeniable.

The Vikings drafted McCarthy because of who he can become, not who he is today. And after a lost rookie year, an ankle injury, and limited starts, it’s clear he simply needs what he’s had the least of: time. Patience isn’t just advisable for McCarthy’s development — it’s essential.