Adrian Del Castillo

Adrian Jose Del Castillo (born September 27, 1999) is an American professional baseball catcher for the Arizona Diamondbacks of Major League Baseball (MLB). He made his MLB debut in 2024.

Amateur career Del Castillo attended Gulliver Preparatory School in Miami, Florida, where he played baseball. As a senior in 2018, he hit .527 with 15 home runs and 35 RBIs. He was selected by the Chicago White Sox in the 36th round of the 2018 Major League Baseball draft, but did not sign and instead enrolled at the University of Miami.

In 2019, Del Castillo's freshman season with the Miami Hurricanes, he started 61 games and hit .331/.418/.576 with 12 home runs and 72 runs batted in (RBIs). He spent a majority of his time in right field but also spent time at catcher, third base, and designated hitter. He was named to the All-Atlantic Coast Conference Freshman Team and Second Team alongside earning Freshman-All American honors from various outlets. That summer, he played in the Cape Cod Baseball League for the Wareham Gatemen. For his sophomore season in 2020, Del Castillo was expected to shift primarily to catching. He hit .358 with two home runs and 15 RBIs over 16 starts before the college baseball season was cut short due to the COVID-19 pandemic. For the 2021 season, Del Castillo appeared in 54 games in which he batted .275 with three home runs and 37 RBIs.

Professional career The Arizona Diamondbacks selected Del Castillo in the second round, with the 67th overall selection, of the 2021 Major League Baseball draft. He signed with the club for a $1 million signing bonus. To begin his professional career, he was assigned to the Rookie-level Arizona Complex League Diamondbacks before being promoted to the Visalia Rawhide of the Low-A West after two games. Over 24 games for the 2021 season, Del Castillo slashed .265/.367/.422 with one home run, 14 RBI, and six doubles.

Del Castillo was assigned to the Hillsboro Hops of the High-A Northwest League to begin the 2022 season, but also played briefly with the ACL Diamondbacks and Visalia. Over 86 games between the three teams, he batted .210 with seven home runs and 31 RBI. Del Castillo opened the 2023 season with the Amarillo Sod Poodles of the Double-A Texas League and was promoted to the Reno Aces of the Triple-A Pacific Coast League in mid-July. Over 100 games, he hit .263 with 14 home runs and 68 RBI. In 100 games for Reno, he batted .319/.403/.608 with 24 home runs and 70 RBI. After the season, he won the Pacific Coast League Most Valuable Player Award for his performance with the Aces.

On August 6, 2024, Del Castillo was selected to the 40-man roster and promoted to the major leagues for the first time. On August 9, against the Philadelphia Phillies, Del Castillo became the first Diamondbacks player in franchise history to have a walk-off home run as their first in the major leagues. On August 18 against the Tampa Bay Rays, Del Castillo hit a three-run home run that tied the game in the ninth, but the Diamondbacks lost in extra innings. The next day against the Miami Marlins, Del Castillo hit his first career grand slam and recorded six RBI in front of his friends and family in his hometown of Miami. Across 25 games during his rookie campaign, Del Castillo slashed .313/.368/.525 with four home runs and 19 RBI.

Del Castillo was optioned to Triple-A Reno to begin the 2025 season. He missed time during the season due to a shoulder injury and back spasms and had two stints on the injured list. He played in 44 games for the Diamondbacks during the season and hit .242 with four home runs and 17 RBI. He appeared in 28 minor league games between the ACL Diamondbacks and Reno.

Del Castillo arrived at 2026 spring training sidelined with a calf injury. He began his return to play program, running, and defensive work in March.