Giants Trade for Vikings QB J.J. McCarthy After Jaxson Dart’s Season-Ending Knee Injury

The New York Giants acquired quarterback J.J. McCarthy from the Minnesota Vikings on Sept. 28 for a 2027 fifth-round pick, adding a former top-10 draft pick to a quarterback room thrown into chaos by Jaxson Dart’s season-ending knee injury. The move is pending McCarthy passing a physical, and head coach John Harbaugh has already made clear that Jameis Winston remains the starter for now, with McCarthy entering the building this week as the No. 2 or 3 option while he learns the offense.

Dart, the Giants’ rookie signal-caller, went down in Week 2 against the Los Angeles Rams and underwent surgery on his left knee, ruling him out for the remainder of the regular season. Winston has started since, and New York survived a 12-7 slugfest over the Tennessee Titans in Week 3 to move to 2-1, but the offense has not scored a touchdown with Winston under center. Harbaugh’s front office moved fast, shipping a late-round pick to Minnesota for a quarterback who was the 10th overall selection in the 2024 draft.

From Top-10 Pick to Third String in Minnesota

McCarthy’s path to New York has been anything but smooth. He missed his entire rookie season in 2024 after tearing his meniscus in the preseason opener, which opened the door for Sam Darnold to lead the Vikings to a 14-3 record. When Darnold left in free agency, McCarthy was handed the starting job for 2025 and opened with a comeback win over the Chicago Bears. But the season unraveled from there — a high-ankle sprain cost him five games, a concussion cost him another, and a hairline fracture in his throwing hand, suffered against the Giants in Week 16, ended his year early.

Across his 10 starts in 2025, McCarthy completed 57.6 percent of his passes for 1,632 yards with 11 touchdowns and 12 interceptions, adding 181 rushing yards and four more scores on the ground. The Vikings went 6-4 in those starts, but McCarthy’s individual numbers told a rougher story: among qualified quarterbacks, he finished last in completion percentage, last in interception rate and last in passer rating (72.6). Minnesota brought in Kyler Murray this offseason, and McCarthy lost the starting job in camp, then lost the backup competition to veteran Carson Wentz, leaving him as the clear third-string option. The trade clears roughly $4.5 million off Minnesota’s books.

Winston, meanwhile, has completed 25 of 49 passes for 229 yards with zero touchdowns and an interception across two appearances this season, posting QBR marks of 19.0 and 27.9 in his two starts filling in for Dart. Harbaugh has committed to Winston again this week, but how long that leash extends is an open question if the offense continues to stall.

What the Betting Markets Are Saying

The Giants’ outlook took a sharp hit the moment Dart’s injury was confirmed. According to BetMGM, New York’s playoff odds opened the season at +260 and tightened to +165 after a Week 1 win over Dallas, only to balloon back out to +550 once Dart’s surgery was announced — worse than every team except Cleveland, Arizona, Miami, Tennessee and Washington at that point. FanDuel moved similarly, pushing the Giants’ postseason price out to +560. The team’s projected regular-season win total, which sat at 8.5 before the injury, got knocked down to a line in the 5.5-to-6.5 range across books, and Super Bowl odds cratered out to roughly +8000.

Prediction markets reacted even faster than the sportsbooks. Giants playoff contracts on Polymarket fell from the high 40-cent range at kickoff down to 26 cents after the injury, while the team’s NFC East title contract sank to 10 cents. On Kalshi, Giants Super Bowl futures are now pricing in roughly a 1 percent implied probability, while the market gives New York about a 59 percent chance of reaching seven or more wins and a 43 percent chance of reaching eight — numbers that will move again depending on how the McCarthy addition plays out under center the rest of the way.

For now, the futures markets appear to be treating the McCarthy trade as a hedge rather than a reset. Harbaugh’s insistence that Winston stays the starter suggests books won’t see enough new information to move lines again until — or unless — McCarthy actually takes meaningful snaps. But with an offense that hasn’t found the end zone since Dart’s injury, any shift under center in the coming weeks has real potential to swing New York’s remaining win total and playoff pricing, making the Giants a team worth watching closely in the futures market the rest of the way.