Diamondbacks’ pitching options in free agency are running out

With Ryan Helsley singing with the Baltimore Orioles and Devin Williams reportedly signing with the New York Mets, the pool of elite, available arms is rapidly thinning. On the bullpen front, Edwin Díaz remains the top free-agent closer still unsigned. Though his asking price will surely be a high one, Díaz could secure the back end of the bullpen that looked shaky all year.

After opting out of his deal with the Padres, Michael King, the 30-year-old right-hander, is durable when healthy and could be a piece to replace Zac Gallen in the lineup. King polished off 2025 with a 3.44 ERA and a 5-3 record.  What about bringing back Zac Gallen? After a strong career in Arizona, 2025 was a struggle. Still, in the season’s final two months, he pitched with more command and was determined to end his season strong, suggesting maybe a change of scenery or revised pitching plan could revive him.

For Arizona fans, this is more than roster management; it’s about whether the D-backs double down on hopeful gambles or pivot to development and youth. If management chases big names like Michael King or Edwin Díaz, price and long-term commitment loom. Arizona’s front office must choose between investing big now in pitching via free agency or trading some of their pieces. The road they pick will shape how the Snakes not just look in the upcoming 2026 MLB season, but for years to come.