Luis Felipe Castillo Bio
Luis Felipe Castillo is a Dominican professional baseball pitcher who has competed at the highest levels of the sport across three continents. Born on March 10, 1995, Castillo began his professional journey by signing with the Arizona Diamondbacks as an international free agent in 2012. Over his career, he has played in Major League Baseball for the Detroit Tigers and Seattle Mariners, spent two seasons in Japan’s Nippon Professional Baseball with the Chiba Lotte Marines and Orix Buffaloes, and represented the Dominican Republic at the 2020 Summer Olympics. Castillo is currently a free agent following his stint with Diablos Rojos del México in the Mexican League.
Early Life and Background
Luis Felipe Castillo was born on March 10, 1995, in the Dominican Republic. Growing up in one of baseball’s most prolific producer nations, Castillo developed his passion and skills at a young age. The Dominican Republic has a rich tradition of developing world-class baseball talent, and Castillo emerged from this competitive environment to pursue a professional career in the sport.
Castillo signed with the Arizona Diamondbacks as an international free agent in February 2012, marking the beginning of his professional baseball journey. At just 16 years old, he left his home country to pursue his dream of reaching Major League Baseball, embarking on what would become a diverse career spanning multiple leagues and countries.
Path to Professional Baseball
Upon signing with the Diamondbacks, Castillo made his professional debut in 2012 with the Dominican Summer League Diamondbacks. In his rookie season, he appeared in 14 starts and recorded an 0-9 record with a 4.48 earned run average. The following season, Castillo improved to a 4-4 record with a 3.58 ERA in 14 starts, demonstrating his ability to adjust and compete at the professional level.
Castillo continued his development through the Diamondbacks minor league system over the next several years. In 2014 with the rookie-level AZL Diamondbacks, he posted a 3-3 record and 4.40 ERA in 15 appearances. His 2015 season was particularly impressive, as he recorded a stellar 1.83 ERA in 11 games. After spending 2016 with the Missoula Osprey and 2017 with the Low-A Hillsboro Hops, Castillo advanced to higher levels of the minor leagues in 2018 and 2019, ultimately reaching the High-A Visalia Rawhide where he went 9-0 with a 3.81 ERA in 43 appearances during the 2019 season.
Luis Felipe Castillo Career
Detroit Tigers (2022)
On February 1, 2022, Castillo signed a minor league contract with the Detroit Tigers organization. He began the season with the Triple-A Toledo Mud Hens before receiving his first major league call-up in August. The Tigers selected Castillo to their 40-man roster and promoted him to the majors on August 6, 2022. He made his Major League Baseball debut that same night.
Castillo appeared in three scoreless relief appearances for Detroit, striking out four batters over 3.2 innings of work. His first MLB experience came against some of the world’s best hitters, and he demonstrated his ability to compete at the sport’s highest level. Following the season, the Tigers removed Castillo from their 40-man roster and sent him outright to Triple-A Toledo. He elected free agency on November 10, 2022.
Nippon Professional Baseball Stint (2023–2024)
Following his time with the Tigers, Castillo took his talents to Japan. On December 16, 2022, he signed with the Chiba Lotte Marines of Nippon Professional Baseball. In his first NPB season in 2023, Castillo appeared in 12 games and compiled a 3-3 record with a 3.12 ERA and 34 strikeouts across 49 innings pitched. His performance demonstrated his adaptability to different baseball cultures and competition levels.
Prior to the 2024 season, Castillo switched NPB teams, signing with the Orix Buffaloes on January 16, 2024. With the Buffaloes, he became a more integral part of the rotation, making 15 appearances with a 3-5 record and an impressive 2.96 ERA. He recorded 74 strikeouts over 94.1 innings, showing his ability to pitch deep into games and miss bats at a high rate. Castillo became a free agent after the 2024 season.
Seattle Mariners and Baltimore Orioles (2025)
Castillo returned to Major League Baseball on January 28, 2025, signing a minor league contract with the Seattle Mariners that included an invitation to spring training. The Mariners selected his contract on April 4, adding him to their active roster for the 2025 season. Interestingly, Castillo was nicknamed “The Pebble,” a playful reference to teammate Luis Castillo’s nickname of “La Piedra,” which means “The Rock” in Spanish.
Castillo’s second stint in MLB proved challenging, as he struggled in two starts for Seattle, posting a 7.71 ERA with five strikeouts over seven innings. The Mariners optioned him to the Triple-A Tacoma Rainiers on April 10. On May 6, Seattle designated Castillo for assignment. The following day, the Mariners traded him to the Baltimore Orioles in exchange for cash considerations. After completing two rehabilitation starts for the rookie-level Florida Complex League Orioles, Baltimore designated him for assignment on June 29. Castillo cleared waivers and was sent outright to the Triple-A Norfolk Tides on July 7. He elected free agency on October 1, 2025.
Diablos Rojos del México (2026)
Following the conclusion of his 2025 season, Castillo joined the Dominican Winter League, playing one game for the Águilas Cibaeñas. He then temporarily joined the Diablos Rojos del México during the 2026 Baseball Champions League Americas before signing with the Mexican League club on March 25, 2026. In five starts with Diablos Rojos, Castillo posted a 2-1 record with a 4.15 ERA and 17 strikeouts across 21.1 innings. The team released him on June 10, 2026.
International Career
Luis Felipe Castillo represented the Dominican Republic on the international stage during the 2020 Summer Olympics, which were held in Tokyo in 2021 due to the pandemic. He appeared in five relief appearances for the Dominican national team during the tournament. Castillo posted a 1-1 record with a 6.75 ERA in his Olympic action, gaining invaluable experience competing against the world’s best national teams.
Luis Felipe Castillo Career Statistics
Castillo has compiled professional statistics across Minor League Baseball, Major League Baseball, and Nippon Professional Baseball throughout his career spanning from 2012 to 2026. His diverse career path has seen him compete in North America, Asia, and Latin America at the professional level.
Career Performance Summary
In Major League Baseball, Castillo has appeared in five games with a 0-0 record and a 5.06 earned run average, recording nine strikeouts across his brief MLB appearances. His Nippon Professional Baseball career was more extensive, as he combined for a 6-8 record with a 3.01 ERA and 108 strikeouts across two seasons with the Chiba Lotte Marines and Orix Buffaloes. In the Mexican League with Diablos Rojos del México, Castillo went 2-1 with a 4.15 ERA in five starts.
2025 Season Performance
The 2025 season represented a return to Major League Baseball for Castillo following his successful two-year stint in Japan. After signing with the Seattle Mariners in late January, he earned a spot on the active roster after a strong spring training performance. His debut with Seattle came on April 4, marking his first MLB action since 2022.
Castillo’s time with the Mariners was brief and challenging, as he was unable to find his rhythm in two starts before being optioned to the minors. The subsequent trade to the Baltimore Orioles provided a fresh opportunity, but he spent most of his time with Baltimore’s minor league affiliates working on his craft. Despite the difficulties, Castillo gained valuable experience navigating the challenges of MLB rosters and transactions.
Following his release from the Orioles organization and subsequent free agency, Castillo concluded the 2025 season by joining the Águilas Cibaeñas in the Dominican Winter League. His diverse career has seen him adapt to multiple leagues and countries, demonstrating resilience and versatility as a professional pitcher. As he enters the next phase of his career, Castillo’s experience in MLB, NPB, and various Latin American leagues positions him as a well-traveled veteran capable of contributing at multiple levels of professional baseball.