José Ruiz Bio
José Rafael Ruiz Aparicio, born on October 21, 1994, is a Venezuelan professional baseball pitcher currently playing for the Yokohama DeNA BayStars in Nippon Professional Baseball (NPB). A right-handed reliever with extensive Major League Baseball (MLB) experience, Ruiz has suited up for the San Diego Padres, Chicago White Sox, Arizona Diamondbacks, Philadelphia Phillies, and Atlanta Braves across the past decade. He made his MLB debut in 2017 and remains active at the top professional level.
Standing out for his journey from catcher to pitcher, Ruiz reinvented his career midway through the minor leagues and developed into a reliable bullpen arm. His path has taken him from the Dominican Summer League to Triple-A affiliates, and now to international baseball in Japan, where he continues to extend a versatile and resilient career.
Early Life and Background
José Rafael Ruiz Aparicio was born on October 21, 1994, and grew up in Venezuela, a country that has produced a long line of Major League Baseball talent. From an early age, he was drawn to the sport and developed his game in a baseball-rich environment that has produced numerous professional players.
On July 2, 2011, Ruiz signed with the San Diego Padres as an international free agent, beginning his professional journey as a teenager. He entered the Padres’ system initially as a position player, with no indication at that time that his future would be on the mound. His Venezuelan roots and early professional contract set the foundation for a career that would later span multiple organizations and countries.
Path to Professional Baseball
Ruiz made his professional debut in 2012 with the Dominican Summer League Padres, where he appeared in 55 games as a catcher and posted a .177 batting average. The following year, he moved up to the rookie-level Arizona League Padres, batting .224 with no home runs and 16 runs batted in across the season.
He continued to climb the Padres’ minor league ladder, spending 2014 with the Low-A Eugene Emeralds and 2015 with the Single-A Fort Wayne TinCaps. In 2016, he joined the High-A Lake Elsinore Storm, and midway through that season the Padres converted him into a pitcher. He made 11 scoreless appearances across the AZL Padres, Low-A Tri-City Dust Devils, and Lake Elsinore, and on November 18, 2016, San Diego added him to its 40-man roster to protect him from the Rule 5 draft.
José Ruiz Career
Early Career (2012–2016)
Ruiz’s early professional years were spent learning the game as a catcher across the Padres’ lower-level affiliates. From the Dominican Summer League through the High-A Lake Elsinore Storm, he faced the everyday grind of position play while searching for consistent offensive production. His most notable developmental stretch came in 2015, when he played 90 games for the Fort Wayne TinCaps.
The defining moment of his early career came in 2016, when the Padres converted him into a pitcher and he responded with 11 scoreless relief appearances across three affiliates. The strong showing convinced the organization to protect him on the 40-man roster, signaling that his new role on the mound was where his future lay.
San Diego Padres Breakthrough (2017)
Ruiz began 2017 with the Lake Elsinore Storm and earned his first major league call-up on July 24. In his MLB debut that day, he pitched a scoreless inning, striking out one and walking one, with his first career strikeout coming against Yoenis Céspedes. The performance offered a glimpse of the arm the Padres had seen flash in the minors.
Despite the promising debut, Ruiz was sent back to Lake Elsinore the following day. He appeared briefly with the Padres late in the season, but on December 15, 2017, he was designated for assignment, closing his first chapter in the major leagues.
Chicago White Sox Era (2018–2023)
Ruiz was claimed off waivers by the Chicago White Sox on December 22, 2017, and began 2018 with the Winston-Salem Dash. He was called up to the majors on September 4 and made six appearances for the White Sox, posting a 4.15 earned run average (ERA) in his first extended big-league look with the club. The following year, in 2019, he appeared in 40 games and finished with a 5.63 ERA as he continued to adjust to a full major league workload.
Ruiz had a short 2020 campaign, appearing in five games with a 2.25 ERA and five strikeouts in four innings. In 2021, he posted a 1–3 record with a 3.05 ERA across 59 games, striking out 63 batters in 65 innings. The 2022 season saw him appear in 63 games with a 4.60 ERA. On January 13, 2023, he agreed to a one-year, $925,000 contract to avoid salary arbitration, but struggled early and was designated for assignment on April 7, 2023.
Arizona Diamondbacks (2023)
On April 9, 2023, the White Sox traded Ruiz to the Arizona Diamondbacks in exchange for cash considerations. In 34 appearances for Arizona, he recorded a 4.43 ERA with 36 strikeouts across 40⅔ innings, providing middle relief for a contending club. He was designated for assignment on July 25, cleared waivers, and was sent outright to the Triple-A Reno Aces on July 30. Following the season, he elected free agency on November 2.
Philadelphia Phillies Era (2024–2025)
On November 28, 2023, Ruiz signed a minor league contract with the Philadelphia Phillies that included an invitation to spring training. He opened the year with the Triple-A Lehigh Valley IronPigs, where he posted a 1.64 ERA with 13 strikeouts and three saves across 10 appearances. On May 3, 2024, the Phillies selected his contract, adding him to the major league roster. He went on to appear in 52 games for Philadelphia, finishing 5–1 with a 3.71 ERA, 52 strikeouts, and one save across 51 innings.
In November 2024, Ruiz and the Phillies agreed to a contract worth $1.2 million. His 2025 season in Philadelphia was short, as he made 16 appearances but struggled to an 8.16 ERA across 14⅓ innings. He was designated for assignment on June 1, 2025.
Atlanta Braves and Texas Rangers (2025)
Ruiz was claimed off waivers by the Atlanta Braves on June 7, 2025, and made two appearances for the club, allowing three earned runs with three strikeouts over two innings. On June 20, he was designated for assignment, cleared waivers, and was sent outright to the Triple-A Gwinnett Stripers on June 22. On July 17, 2025, he was traded to the Texas Rangers, alongside cash considerations, in exchange for Dane Dunning. In 20 appearances for the Triple-A Round Rock Express, he posted a 1–0 record and a 2.31 ERA with 24 strikeouts and seven saves across 23⅓ innings. He elected free agency on September 29, 2025.
Yokohama DeNA BayStars (2025–Present)
On December 3, 2025, Ruiz signed a one-year, $1.2 million contract with the Yokohama DeNA BayStars of Nippon Professional Baseball, taking his career overseas to Japan. The move extended a long run of professional opportunities built on perseverance and an ability to adapt to new teams and roles.
Driving Style and Strengths
Ruiz operates as a right-handed reliever whose calling card has been a heavy workload in middle relief. Across his MLB career, he has handled multi-inning appearances and provided consistent strikeout production, with 284 career strikeouts through the 2025 season. His career 4.62 MLB ERA and his success in high-leverage spots with Philadelphia in 2024 underscored his value as a dependable bullpen arm capable of bridging to the late innings.
Notable Events and Milestones
Ruiz’s signature moment came on July 24, 2017, when he struck out Yoenis Céspedes in his MLB debut for the San Diego Padres. His 2024 season with the Phillies, where he went 5–1 with a 3.71 ERA, marked his most productive full major league campaign. On December 3, 2025, he signed with the Yokohama DeNA BayStars, becoming one of the few Venezuelan relievers to jump to NPB at this stage of his career.
José Ruiz Career Wins and Performances
Across his MLB career, Ruiz has compiled an 11–9 win–loss record, a 4.62 earned run average, and 284 strikeouts through the 2025 season. His strongest full season came in 2024 with the Philadelphia Phillies, when he went 5–1 with a 3.71 ERA across 52 appearances. He has also delivered standout relief work in the minor leagues, including a 1.64 ERA with Lehigh Valley in 2024 and a 2.31 ERA with Round Rock in 2025.
MLB Career Highlights
Ruiz’s first MLB win came during his time in the Chicago White Sox organization, where he gradually built into a reliable bullpen option. His most memorable win total came in 2024, when he posted a 5–1 record and a 3.71 ERA for the Phillies. He has added one win in his early NPB work, going 1–0 with a 0.73 ERA and 10 strikeouts through his first appearances with the BayStars.
Other Wins and Performances
In the minor leagues, Ruiz has delivered key performances for affiliates including the Lake Elsinore Storm, Winston-Salem Dash, Reno Aces, Lehigh Valley IronPigs, Gwinnett Stripers, and Round Rock Express. His time at Lehigh Valley and Round Rock stood out, as he combined for a 1.79 ERA across 30 appearances with 37 strikeouts and 10 saves.
José Ruiz Family
Family Background and Personal Life
José Rafael Ruiz Aparicio was born and raised in Venezuela, a country with a deep baseball tradition that has shaped much of his professional journey. Publicly available information about his immediate family and personal life is limited, and he has generally kept those details private.
2025 Season Performance
The 2025 season was a turbulent one for Ruiz as he bounced between multiple organizations. He opened the year with the Philadelphia Phillies, where he struggled to an 8.16 ERA across 16 appearances before being designated for assignment on June 1. The Atlanta Braves claimed him off waivers on June 7, and he made two brief appearances before being designated for assignment again on June 20.
Ruiz was traded to the Texas Rangers on July 17 in exchange for Dane Dunning, and he spent the remainder of the season at Triple-A Round Rock, where he posted a 1–0 record, a 2.31 ERA, 24 strikeouts, and seven saves across 20 appearances. He elected free agency on September 29, 2025, and on December 3 signed a one-year, $1.2 million contract with the Yokohama DeNA BayStars, beginning a new chapter in his career in Japan. Through his early NPB work, he has already shown encouraging form, with a 1–0 record, a 0.73 ERA, and 10 strikeouts, suggesting strong momentum as he continues his international transition.