Diamondbacks Designate Garrett Hampson, José Castillo For Assignment

The Diamondbacks announced that they have recalled infielder Jordan Lawlar, a move that was previously reported. They also reinstated right-hander Kendall Graveman from the injured list. To open roster spots for those two, lefty José Castillo and infielder Garrett Hampson were both designated for assignment. The club’s 40-man roster count drops to 38.

Hampson, 30, inked a minor league deal in free agency and broke camp with the D-backs after hitting .283/.393/.348 in 56 trips to the plate this spring. He hasn’t been able to carry that production over to the regular season. He’s appeared in only 18 games and taken just 41 turns at the plate, batting .167/.359/.167 in that span. He’s been a pest for opposing pitchers in the sense that he’s taken 10 walks, but Hampson is also 5-for-30 (all singles) and has bottom-of-the-scale contact metrics when he’s put the ball in play.

Arizona is Hampson’s fourth team in four seasons. He spent the first five seasons of his career with the Rockies but since his final season there has had one-year stints with the Marlins, Royals and now D-backs. He hasn’t much in any of those spots, combining for a .237/.308/.323 slash in 750 plate appearances dating back to 2022. However, Hamspon is a plus runner (84th percentile sprint speed, per Statcast) who can be deployed virtually anywhere on the diamond. Even though he’s been seldom used with the D-backs, he’s still seen time at five positions: second base, shortstop, third base, left field and center field.

Castillo, 29, has spent the better part of the past half decade in injury rehab. Since a strong MLB debut with the 2018 Padres, the southpaw has been on the injured list due to a torn ligament in his pitching hand, a torn lat and Tommy John surgery. Just making it back to the majors in the wake of so many rapid-fire injuries is a feat, but Castillo’s brief time with the Snakes didn’t go well. He pitched 6 1/3 innings out of Torey Lovullo’s bullpen — already his most in a big league season since ’18 — and was pounded for eight runs on 10 hits and three walks with three strikeouts.

As a rookie, Castillo fired 38 1/3 innings of 3.29 ERA ball for the Friars, fanning a gaudy 34.7% of his opponents against an 8.1% walk rate. He was terrific in a small 5 1/3-inning sample in Triple-A Reno this year, allowing only a run on four hits and no walks with seven strikeouts and a 58% grounder rate. That performance could lead to some interest from other teams, although Castillo’s once-95-mph heater has understandably dipped to an average of 93.3 mph in the wake of all those injuries.

Both Castillo and Hampson can spend a maximum of one week in DFA limbo. The D-backs can look to trade them during that time or simply place them on outright waivers. Since waivers take 48 hours to process, the team has up to five days to orchestrate trades of either player, should there be a market. In the event that they’re placed on waivers and go unclaimed, both players have enough major league service time to reject an outright assignment in favor of free agency.