The Mets are going to promote pitching prospect Zach Thornton this week. Manager Carlos Mendoza informed reporters, including Tim Britton of The Athletic, that Thornton will play some kind of role for the Mets on Wednesday. That could be as a starter or working as a bulk guy behind an opener. Thornton is not yet on the 40-man roster, so the Mets will have to make room for him somehow.
Thornton, now 24, was a fifth-round pick of the Mets in 2023. He put himself on the prospect map with a strong 2025 season. He only made 14 starts before an oblique injury ended his season, but the numbers were good. Between High-A and Double-A, he tossed 72 2/3 innings, allowing 1.98 earned runs per nine. He struck out 28.5% of batters faced and only walked 4% of opponents. He also induced grounders on 43.2% of balls in play.
Coming into 2026, Baseball America ranked him the #13 prospect in the system and FanGraphs had him 12th. He doesn’t have huge velocity, averaging just 91 miles per hour with his fastball these days, but both BA and FG highlight his excellent command. FG also highlights his vertical slot and his ability to hide the ball as part of his delivery. His full arsenal includes a four-seamer, sinker, slider, cutter, curveball and changeup.
He has continued to post good numbers this year, with five Double-A starts and two at Triple-A. Combined, he has thrown 37 innings with a 3.16 ERA, 26.5% strikeout rate, 7.9% walk rate and 44.4% ground ball rate. BA bumped him up to #10 in the system in today’s update.
The Mets are dipping into their depth due to the recent injury to Clay Holmes, who fractured his right fibula and might be sidelined into August. Christian Scott is starting tonight and Nolan McLean tomorrow. Wednesday would have been Holmes’s turn. The Mets have some long relief options on the roster, although Sean Manaea just tossed four innings behind Freddy Peralta yesterday. Tobias Myers has starting experience but hasn’t tossed more than three innings in any game this year.
Thornton will at least get a spot start. What remains to be seen is if he’ll get sent back to the minors after that or if he’ll stick around. For the next turn, they could put Manaea or Myers into the Holmes spot. They could also turn to someone else on the farm, such as Jonah Tong, Jack Wenninger or Jonathan Pintaro.
Photo courtesy of Jim Rassol, Imagn Images
Out of Tong, Wenninger, and Thornton, Thornton has shown much more control and despite only two starts in AAA, he’s the oldest of the three. Pitches to contact, we’ll see how that works against the very good offense of the Nats.
Big moment. Good luck to the young man. Tong still very young but seems to get rattled easily
He was a decent goalie for the Fire once