Giants Call Up Zach Morgan to Backstop Against Astros, Move Daniel Susac to IL

The San Francisco Giants have turned to depth behind the plate, selecting catcher Zach Morgan to the major league roster for tonight’s game against the Houston Astros. The move comes after the team lost catcher Daniel Susac to an injured knee, with Susac set to miss time on the 10-day injured list.

According to reporting from Susan Slusser of The San Francisco Chronicle, Morgan was brought into the Giants’ active group in San Francisco on the day of the matchup. The club already had an opening on the 40-man roster, a prerequisite that indicates the transaction was handled to fit the roster math rather than waiting for a later administrative opening.

Giants manager and front office attention appears centered on maintaining stability at catcher after Susac’s setback. The injury described in the transaction report is a left patella fracture, a diagnosis that typically affects both short-term availability and day-to-day readiness given the demands placed on the lower body for blocking pitches, getting out of the crouch, and catching at full speed.

To create the roster spot for Morgan, the Giants plan to place Susac on the 10-day injured list. That operational step matters because it converts a long-term lineup problem into a defined window, while also allowing the organization to audition another catcher in a real game environment rather than relying only on a temporary backup plan.

Morgan’s promotion is notable because it marks his first time joining the Giants on the major league roster. The report characterizes him as a 26-year-old depth option, suggesting San Francisco is leaning on an experienced presence within its catcher group while Susac recovers.

The Astros matchup adds urgency to the timing. Houston is a team that can force constant decision-making from the catcher position, particularly through pitch framing, sequencing, and the ability to call for pitches that keep hitters from getting comfortable. With Susac sidelined, Morgan’s start gives the Giants a direct view of how quickly they can restore rhythm behind the plate.

What to watch next is whether San Francisco uses the promotion as a short-term bridge or a longer look. The immediate indicator will be Morgan’s role during the game, including how the Giants manage his workload and how quickly he integrates into pitch calling and defensive reads. In parallel, the timeline for Susac’s recovery will determine whether the Giants can return to their prior catching arrangement within the 10-day window or needs further adjustment.