The Houston Astros designated veteran reliever Rafael Montero for assignment to make room for new trade acquisitions Yusei Kikuchi and Caleb Ferguson. Montero, who signed a three-year, $34.5 million contract in November 2022, struggled with a 4.70 ERA in 41 appearances this season. This move follows a pattern of disappointing free-agent signings for the Astros, including the earlier release of José Abreu. Montero's recent performance had him on the outs, as he had not been used in critical situations since early July. The Astros will likely absorb the remaining salary on Montero's contract, which runs through 2025.