Inside J.J. McCarthy’s Steady Climb at Vikings Training Camp

J.J. McCarthy runs drills at Vikings training camp in Eagan.
Minnesota Vikings quarterback J.J. McCarthy, wearing number 9, participates in drills on July 29, 2025, during the team’s training camp at the Minnesota Vikings Training Facility in Eagan, Minnesota. McCarthy continues working to solidify his role as the team’s starter in his first NFL training camp. Mandatory Credit: Matt Krohn-Imagn Images.

Through the first two weeks of training camp, rookie quarterback JJ McCarthy has been on a learning curve, absorbing the intricacies of a complex NFL offense. His performance has been a mix of promising moments and the expected growing pains of a young player.

Second-year quarterback J.J. McCarthy is making steady progress at Vikings training camp, honing his fundamentals, accuracy, and adapting his arm talent to NFL speed.

Much of McCarthy’s time has been dedicated to mastering the fundamentals of the game. He’s been diligently working on the “small stuff,” such as perfecting handoffs, executing pump fakes, and taking snaps from the shotgun. He’s also been focused on the quick-hitting plays of Kevin O’Connell’s offense, like screen passes and pitches, all while fine-tuning his footwork.

J.J. McCarthy takes part in Vikings training camp drills.
Minnesota Vikings quarterback J.J. McCarthy participates in drills during the team’s training camp at the Minnesota Vikings Training Facility in Eagan on Jul 28, 2025. The rookie signal-caller continues to develop his timing and footwork while adjusting to the team’s offensive system under head coach Kevin O’Connell. Mandatory Credit: Matt Krohn-Imagn Images.

This detailed approach is a testament to the extensive playbook and the Vikings’ commitment to building a strong foundation for their young signal-caller.

When the action heats up in 7-on-7 drills and full team scrimmages, McCarthy’s performance becomes more revealing. While his completion percentage may not lead the league, his accuracy has been a notable strength.

J.J. McCarthy Took the Reins of the Vikings’ Offense at Training Camp

A key observation has been his tendency to miss high and away from defenders when he does misfire, a positive sign for a young quarterback as it minimizes the risk of turnovers. This has kept his interception total down in camp, although some of his well-thrown passes have unfortunately bounced off receivers’ hands and into the arms of the defense.

Kevin O’Connell watches Vikings minicamp practice.
Minnesota Vikings head coach Kevin O’Connell observes practice during minicamp at the Minnesota Vikings Training Facility in Minneapolis on Jun 10, 2025. O’Connell monitored player progress while working closely with his coaching staff to prepare the roster for the upcoming season, evaluating performance and implementing adjustments as needed. Mandatory Credit: Matt Krohn-Imagn Images.

McCarthy’s arm talent is undeniable. He possesses a powerful arm, a “canon” that has caught the attention of observers. However, this raw power has also been a challenge for his receivers. Veterans like Jordan Addison, as well as Josh Oliver and Jalen Nailor, have had to adjust to the velocity of his “fastball.”

Despite his arm strength, McCarthy has not attempted many deep passes during camp. This is partly due to the absence of star receiver Justin Jefferson, but even with other speed threats like Addison and Nailor, the long ball has been largely absent. This raises the question of what the Vikings’ offense will look like under McCarthy’s direction. Will O’Connell’s scheme rely more on the short and intermediate passing game, or will the deep shots be saved for game days?

Throughout this process, McCarthy has been praised for his “sponge-like” approach to learning. He has been taking in knowledge from head coach Kevin O’Connell and quarterbacks coach Josh McCown. This constant dialogue is a key part of his development as he navigates the challenges of a new system.

J.J. McCarthy speaks to the media at TCO Performance Center.
Minnesota Vikings quarterback J.J. McCarthy addresses the media from the TCO Performance Center following the start of 2025 Offseason Workouts. McCarthy discussed thriving under pressure, building chemistry with head coach Kevin O’Connell, and the strong support he has received from teammates as he begins his first NFL season. Mandatory Credit: YouTube

It’s also important to note the high level of competition McCarthy has been facing. A significant number of his reps have come against the Vikings’ first AND second-team defense, a unit that has been praised for its depth and is benefiting from the aggressive and creative scheme of defensive coordinator Brian Flores. This daily challenge against a formidable defense is undoubtedly a valuable learning experience for the rookie quarterback as he prepares for his first NFL season.

Tomorrow will mark a new and crucial chapter in McCarthy’s development, as he is set to make his preseason debut against the Houston Texans. The rookie will finally have the opportunity to showcase his skills against a different defense in a live game setting, a key step in his journey to becoming the Vikings’ starting quarterback.

Vikings fans reacting in the stands during a game against the Texans.
Minnesota Vikings fans react in the stands during the third quarter of the team’s matchup against the Houston Texans at U.S. Bank Stadium in Minneapolis on Sep 22, 2024. The home crowd showed visible energy and emotion as the game unfolded in a competitive atmosphere. Mandatory Credit: Jeffrey Becker-Imagn Images.

All eyes will be on McCarthy as he takes the field for what is expected to be a brief but telling appearance, and a chance to put the lessons learned in camp into practice.


Sean Borman is a writer with Minnesota roots that's a Vikings optimist. He was an intern with the Vikings ... More about Sean Borman