The Astros reassigned Willingham to minor-league camp Sunday, Brian McTaggart of MLB.com reports.
The 27-year-old right-hander made 19 appearances in the big leagues for Washington in 2023-24, but he spent all of 2025 in the minors as a member of the Atlanta organization, logging a 5.17 ERA in 55.2 innings across stops with four different affiliates. After being cut from the Astros' big-league camp, Willingham will likely open the 2026 campaign at Triple-A Sugar Land.