John Harbaugh's Giants Era Begins With Jaxson Dart's First Career Start Against the Cowboys
New coach, new starting quarterback, old rival — the Giants' actual 2026 season starts with about as much riding on one prime-time game as an opener can carry.
The John Harbaugh era officially begins in New York on Sunday night, when the Giants host the Dallas Cowboys at MetLife Stadium in a Sunday Night Football season opener carrying an unusual amount of storylines for a Week 1 game. Rookie quarterback Jaxson Dart is set to make his first career start, opposite Dak Prescott and a retooled Cowboys defense under new coordinator Christian Parker.
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New York enters as 2.5-point home underdogs, and questions still surround wide receiver Malik Nabers' availability for the opener. The Giants did lock up two other pieces of their roster this week, signing quarterback Jameis Winston and guard Jon Runyan Jr. to two-year extensions that keep both under contract through 2028. The timing of those two deals, landing in the same week as a rookie quarterback's first career start, reads as a deliberate stability move by the front office — securing a proven backup behind Dart and a veteran piece of the interior line before the season even kicks off, rather than letting either situation become a distraction if Dart's early transition gets bumpy.
Harbaugh, 63, arrives with a real résumé — a Super Bowl XLVII title and 12 playoff appearances in 19 years at Baltimore — but he's never had to build a rookie quarterback from scratch before. Dart, 23, threw 24 touchdowns in just 12 starts as a rookie, real production that has him talked about as a genuine breakout candidate, if 23-year-old Nabers, still working back from the torn ACL that cost him the second half of 2025, is healthy enough to be his top target. Harbaugh has tried to keep the moment in perspective for his rookie starter, telling reporters, "The first game is not the end of the story. The first game is the beginning of the story."
My mind is focused on playing the regular season, playing whenever that is and playing what team it is.— Malik Nabers, 23, Giants WR
Our take: Harbaugh's track record buys real patience if this Giants team struggles early, which is more than most rookie head coaches get. But throwing a rookie quarterback into a prime-time division game against Dak Prescott and a real Cowboys offense, with his top receiver's health still in question, is about as hard a first assignment as the schedule-makers could have handed him. The pressure dynamic here also cuts differently than it did in Baltimore: Harbaugh built his old team's identity over nearly two decades, while New York is asking him to build one from a rookie quarterback's first snap forward, with a fan base that hasn't seen sustained postseason success in years and won't extend the same patience Baltimore did during his early seasons there.
Week 1 Prediction: Score, Spread & Player Prop
Cowboys -2.5 road favorites (moneyline -155, Giants +130), per ESPN and DraftKings.
Total sits at 48.5, one of the week's highest. Our pick: Cowboys 27, Giants 24 (Over).
Jaxson Dart OVER 210.5 passing yards. A high-total shootout script and a real rookie-season track record both point to volume in his first career start.
Odds and props reflect market consensus across DraftKings, FanDuel, and BetMGM as of this week — lines move, so check your own sportsbook before kickoff.
New York's build-up to Week 1
Giants sign QB Jameis Winston and G Jon Runyan Jr. to two-year extensions through 2028.
Malik Nabers' Week 1 availability remains unconfirmed heading into the opener.
Giants host Cowboys, Sunday Night Football, 8:20 p.m. ET on NBC, MetLife Stadium.
A new coach, a rookie quarterback's first start, and the Cowboys on opening night — the Harbaugh era doesn't get an easy on-ramp.
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Sources: NFL.com, New York Giants, Big Blue View