3:03pm: Mets manager Carlos Mendoza confirmed that Tong will be promoted and make his major league debut against the Marlins this Friday, per ESPN’s Jorge Castillo.
2:46pm: The Mets are set to promote top pitching prospect Jonah Tong for his major league debut, reports Will Sammon of The Athletic. They’ll need to clear space on both the 40-man and 26-man rosters in order to formally select his contract from Triple-A Syracuse. Tong will be used as a starter, per Joel Sherman of the New York Post.
Tong, 22, has been one of the best pitchers in all of Minor League Baseball in 2025. His stock has soared accordingly, and he’s leapfrogged Syracuse teammate Brandon Sproat as the top yet-to-debut pitching prospect in the Mets organization. He’ll join another ballyhooed young righty, Nolan McLean, in what amounts to a late-season youth movement for a Mets club that has seen veteran starters like Sean Manaea, Frankie Montas, Tylor Megill, Paul Blackburn and Griffin Canning struggle and/or miss significant time due to injury.
A seventh-round pick back in 2022, Tong opened the current season in Double-A and posted a video-game-esque 1.59 ERA and 40.8% strikeout rate in 102 innings there. That earned him a bump to Triple-A, where he’s some improved. Tong has tossed 11 2/3 scoreless innings with the Mets’ top affiliate, allowing only eight hits and three walks (6.7%) while punching out 17 of 45 opponents (37.8%).
Tong’s dominant season has catapulted him toward the top of the Mets’ prospect rankings and into the elite tier of leaguewide prospects. Baseball America ranks the 6’1″, 180-pound righty as the sport’s No. 42 overall prospect, and Tong sits 44th at MLB.com. ESPN’s Kiley McDaniel has Tong up at No. 21 on the updated top-100 list he released earlier this week.
That slight frame, Tong’s arm slot and his usage of a plus changeup invoke some comparisons to former Cy Young winner Tim Lincecum, though his overall delivery isn’t nearly as violent. Scouting reports on Tong typically cite him sitting 92-94 mph with elite induced vertical break, but he’s averaged 95.7 mph in his pair of Triple-A outings thus far. That previously mentioned changeup, which sits in the mid-80s, has been Tong’s go-to secondary offering and misses bats in droves. He also mixes in a curveball in the upper 70s and a slider that sits 87 mph.
Since he was called up after Aug. 15, Tong cannot accrue 45 days of service time this year and will thus retain his rookie eligibility heading into the 2026 campaign. That will qualify him for MLB’s Prospect Promotion Incentive program, meaning he could net the Mets a compensatory pick if he breaks camp with next year’s team and wins NL Rookie of the Year — or if he finishes top-three in Cy Young or MVP voting in any of his first three full MLB seasons. In terms of club control, the Mets can keep Tong all the way through the 2031 season, and he wouldn’t qualify for arbitration until the 2028-29 offseason.
While Tong is very arguably already one of the best 13 pitchers in the Mets system and thus deserving of a chance to help the team push into the postseason, the late promotion also offers Mets faithful a glimpse at the future. Tong and McLean will have the opportunity to join Kodai Senga, David Peterson, Clay Holmes and Manaea as rotation arms moving forward. Sproat and former top prospect Christian Scott, who’s on the mend from last summer’s Tommy John surgery, only further add to that impressive crop of pitching.
It’s not yet clear exactly how New York will work all of those arms onto the staff, but that’s an issue for a future day. For the time being, the focus will be on Tong stepping into the heat of a playoff race, looking to continue his meteoric ascent and, ideally, impressing enough to position himself as a core piece in Queens.