When Should J.J. McCarthy Start for the Giants?

The New York Giants made a surprising move this week when they traded a 2027 fifth-round pick to the Minnesota Vikings for former first-round quarterback J.J. McCarthy. The timing makes sense after Jaxson Dart was ruled out for the rest of the regular season, but it also creates an interesting question for John Harbaugh: when should McCarthy actually get his chance?

For now, the answer should be simple. Jameis Winston should remain the starter, but the Giants should not be afraid to turn to McCarthy if Winston fails to give this offense enough production.

Winston Deserves the First Opportunity

I do not think McCarthy should walk into the building and immediately take Winston’s job. Winston has been in the offense all offseason, knows the system and has already helped the Giants win a game.

Against Tennessee, he completed 14 of 22 passes for 118 yards in a 12-7 victory, and while the passing attack was far from impressive, the Giants did exactly what they needed to win. John Harbaugh has also made it clear that Winston is the starter entering Week 4 against Arizona.

McCarthy Has Not Had Enough Time Yet

The biggest reason to wait is not necessarily about Winston. It is about McCarthy. The Giants acquired him on September 28, and he only began practicing with the team later that week. Minnesota had already decided to move on from him after selecting him 10th overall in 2024, and McCarthy spent his 2026 preseason competing for a job before ultimately falling behind Kyler Murray and Carson Wentz.

He is also coming off a 2025 season in which he started 10 games and completed 57.6% of his passes for 1,632 yards, 11 touchdowns and 12 interceptions. Throwing him into the lineup immediately would mean asking him to learn a new offense while simultaneously trying to establish himself as an NFL starter again.

Week 4 Should Still Belong to Winston

The Cardinals game should be Winston’s opportunity to show that he can keep the job. The Giants are 2-1 heading into the matchup, and there is no reason for Harbaugh to make a quarterback change simply because McCarthy is now on the roster.

Winston also deserves the chance to play a normal game after making his first start in miserable weather against Tennessee. If he can consistently move the offense, protect the football and take advantage of the Giants’ weapons, there is no reason to rush McCarthy onto the field.

But the Giants Cannot Wait Forever

This is where I think the situation gets interesting. If Winston continues producing games where the Giants struggle to score touchdowns, McCarthy should eventually get an opportunity. Winston has now started one full game for New York, and the Giants did not score a touchdown in that victory.

Winning games with defense, special teams and Cam Skattebo is great, but the Giants cannot expect that formula to work every week. If the offense becomes the clear weakness, there should be a point where Harbaugh asks whether McCarthy can give the team more upside.

Give McCarthy a Few Weeks to Learn

If Winston struggles, I would target the middle of the season for a potential change rather than making the decision after one bad performance. That gives McCarthy time to learn the playbook, build chemistry with Malik Nabers, Skattebo and the rest of the offense, and become comfortable with Harbaugh’s system.

McCarthy also brings a different skill set than Winston, including mobility and the experience of starting 10 games in the NFL. He went 6-4 in those starts last season, although his overall passing numbers show that he still has plenty to prove.

McCarthy Is More Than Just a Backup

The reason this trade is so interesting is that the Giants did not acquire a random veteran to sit behind Winston. McCarthy was the 10th overall pick two years ago and was considered a long-term quarterback prospect when Minnesota drafted him.

The Vikings ultimately moved on, but New York clearly sees enough talent to justify giving up a draft pick for him. Harbaugh called McCarthy a strong young quarterback with NFL experience and said the former first-round pick would make the Giants a stronger football team. That does not mean he should automatically start, but it does mean the Giants should eventually find out what they have.

My Timeline for McCarthy

If Winston plays well, I would have no problem letting him remain the starter for the rest of the season. If the offense continues struggling, however, I would give McCarthy a chance somewhere around the middle of the season.

I would not make the switch because of one ugly game. I would make it if there is a consistent pattern of the offense failing to produce touchdowns and Winston failing to create enough explosive plays. By that point, McCarthy should have had enough time in the system to make the transition worthwhile.

Final Thoughts

J.J. McCarthy should not start for the Giants simply because he was a former first-round pick. Winston has earned the opportunity to begin this stretch as the starter, and McCarthy needs time to learn a completely new offense. But the Giants also need to keep the bigger picture in mind. They are 2-1, have a talented defense, and have players like Malik Nabers and Cam Skattebo who can help them compete.

If Winston proves he can lead the offense, keep him in. If he cannot, I would rather see the Giants take a chance on McCarthy than spend the rest of the season wondering what their young quarterback can do. The goal should not be to make a quarterback change quickly. It should be to make the right one when the time comes.