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.
More to come.
