The Mets signed Hagenman to a one-year, $850,000 contract Monday, Will Sammon of The Athletic reports.
Hagenman has never pitched at the big-league level, but the Mets saw enough promise in the 28-year-old to add him to their 40-man roster. The right-hander spent all of the 2024 season at Triple-A Worcester in the Red Sox organization, posting a 4.91 ERA and 98:31 K:BB over 91.2 innings while splitting time between the rotation and bullpen.