Hatch turned 31 just a few days after the season ended. He pitched in parts of five big league seasons between the Blue Jays, Pirates, Royals and Twins, finishing the 2025 season with the last of that quartet. In 103 MLB frames, the former third-round pick (Cubs, 2016) has a 5.24 ERA, 18% strikeout rate, 10.8% walk rate and 46.3% groundball rate.
Although he hasn’t found much big league success, Hatch has been a solid starter in four Triple-A campaigns. He pitched 334 innings at the highest minor league level and registered a serviceable 4.42 earned run average while striking out 22.3% of his opponents at a decent 7.5% walk rate. Hatch also has brief experience pitching overseas in Japan’s Nippon Professional Baseball, though he made just five appearances for the Hiroshima Carp during that 2024 stretch.
Hatch has split his time in pro ball fairly evenly between starting and relieving. He will compete for a job this spring, but would likely be ticketed to a swingman role even if he were to secure a roster spot. Arizona’s rotation currently includes Merrill Kelly, Ryne Nelson, Brandon Pfaadt, Eduardo Rodriguez And Michael Soroka. Kelly and Soroka signed as free agents this winter. Include depth options outside this group Yilber Diaz, Cristian Mena, Kohl Drake, Mitch Bratt And Dylan Ray. All five are 25 years old or younger, but none of that quintet has yet proven themselves in the major competitions; the latter three have yet to make their Major League debut.
#Diamondbacks #Thomas #Hatch #agree #Minor #League #deal