November 11: The Diamondbacks announced that they have outrighted Castellanos and Zuber, as well as infielder Buddy Kennedy.
November 10: The Diamondbacks announced a batch of roster moves today, reinstating five players from the 60-day injured list. They are infielders Nick Ahmed and Emmanuel Rivera, left-hander Tyler Gilbert, along with right-handers Humberto Castellanos and Tyler Zuber. Those latter two names have also been designated for assignment. That leaves the club’s 40-man roster at exactly 40.
Starting today and until Spring Training, there is no injured list. That means that most teams around the league are facing roster crunches as players on the 60-day IL have to retake their roster spots. The D-Backs reinstated these five but also had to designate a couple of them in order to get their roster down to an even 40.
Zuber, 28 in June, was just claimed off waivers from the Royals a couple of weeks ago. The fact that Arizona has quickly put him back into DFA limbo perhaps suggests that their plan in claiming him has been to pass him through waivers and hang onto his rights. He missed all of 2022 due to a shoulder impingement but recently began throwing again. When he was last healthy in 2021, he had poor results in the majors but put up a 2.83 ERA in Triple-A with a 37.1% strikeout rate, though an unfortunate 13.8% walk rate. If he clears waivers, the D-Backs can try to help him with his control but without Zuber taking up a roster spot.
As for Castellanos, 25 in April, he made 11 appearances for the Snakes in 2022, including nine starts. Unfortunately, he required Tommy John surgery in August and is likely to miss the entire 2023 season.