Eduarniel Núñez Bio
Eduarniel Núñez (born June 7, 1999) is a Dominican professional baseball pitcher who currently plays for the Athletics of Major League Baseball (MLB). A right-handed reliever, Núñez came up through the minor league system of the Chicago Cubs before reaching the majors with the San Diego Padres and later being dealt to Oakland. He is regarded as a hard-throwing bullpen arm whose path through the minors included stints at several affiliates across the Dominican Summer League, Low-A, High-A, Double-A, and Triple-A levels.
After spending parts of eight seasons working his way up the Cubs’ farm system, Núñez made his MLB debut in 2025 with the Padres before being traded at the July 31 deadline to the Athletics. His ascent from international signing to the major leagues is a story of steady development, with each season bringing refined results and additional responsibilities in the bullpen.
Early Life and Background
Eduarniel Núñez was born on June 7, 1999, in the Dominican Republic, a country that has produced a long line of Major League Baseball talent. Growing up in the Dominican Republic, he was surrounded by a culture in which baseball is a daily pursuit, played on neighborhood fields and in amateur leagues that have long served as proving grounds for future big leaguers. As with many Dominican prospects, his route into professional baseball came through the international free-agent market rather than the domestic draft.
Details about his family and formal education are not publicly documented in verified sources. What is known is that Núñez possessed the arm talent and durability to attract a major-league organization at a young age, leading to his entry into professional baseball while still a teenager. His Dominican heritage and background in a baseball-rich environment helped shape his development as a pitcher.
Path to Baseball
Núñez’s professional journey began on March 15, 2017, when he signed with the Chicago Cubs as an international free agent at age 17. He made his pro debut that same season with the Dominican Summer League Cubs, getting his first taste of organized baseball on the Cubs’ Dominican academy circuit. In 2018, he moved to the United States and made 10 starts for the rookie-level Arizona League Cubs, posting a 1-3 record with a 3.19 ERA and 39 strikeouts across 36⅔ innings.
The following year, Núñez pitched for the Low-A Eugene Emeralds and struggled to a 1-5 record and 6.93 ERA in 15 appearances, a step back that tested his resolve. He did not play in a game in 2020 after the minor league season was canceled because of the COVID-19 pandemic. Returning in 2021, he split time between Single-A Myrtle Beach and High-A South Bend, appearing in 35 games and posting a 1-4 record with a 4.17 ERA, 50 strikeouts, and five saves, showing the swing-and-miss stuff and late-inning potential the Cubs had envisioned when they signed him.
Eduarniel Núñez Career
Early Career (2017-2021)
During his developmental years, Núñez transitioned from a starting pitcher to a reliever, a move that highlighted his electric arm and shortened his path to the upper minors. After the canceled 2020 season, he returned to action in 2021 working primarily out of the bullpen for Myrtle Beach and South Bend, where he notched five saves and struck out 50 batters in 45⅓ innings. The Cubs saw enough progress to keep moving him up the ladder, and his performance in leverage roles suggested a future as a late-inning arm.
In 2022, Núñez split the year between High-A South Bend and Double-A Tennessee, logging a 5-5 record and 4.53 ERA with 57 strikeouts and four saves across 41 relief appearances. The volume of appearances and the fact that he was used in save situations underscored the organization’s growing confidence in his ability to handle high-leverage work. By the end of the 2022 season, Núñez had established himself as a reliable bullpen arm within the Cubs’ system.
Chicago Cubs System (2017-2024)
Núñez spent the bulk of his career within the Chicago Cubs organization after signing in 2017, climbing steadily through their affiliate chain. In 2023, he returned to South Bend and Tennessee and made 38 total relief appearances, accumulating a 3-1 record and 3.11 ERA with 61 strikeouts and one save across 46⅓ innings. That July, while pitching for South Bend, he was part of a four-pitcher combo that no-hit the Peoria Chiefs, a memorable milestone in his minor league tenure. After the season, he became a minor league free agent and re-signed with Chicago on a new minor league contract on November 8, 2023.
His 2024 campaign was his most accomplished in the Cubs’ system. Pitching between Double-A Tennessee and Triple-A Iowa, Núñez posted a 9-3 record and 3.28 ERA with 64 strikeouts and five saves across 46 appearances, demonstrating both durability and improved command. He elected free agency on November 4, 2024, closing out a seven-year run with the Cubs organization that took him from a teenage international signing to the brink of the major leagues.
San Diego Padres (2024-2025)
On November 6, 2024, Núñez signed a minor league contract with the San Diego Padres organization, looking for a fresh opportunity to reach the majors. He began the 2025 season with the Double-A San Antonio Missions before a June promotion to the Triple-A El Paso Chihuahuas. With El Paso, he made seven scoreless appearances, recording one win, two saves, and 11 strikeouts across 7⅓ innings, the kind of dominant stretch that finally opened the door to the big leagues.
On July 1, 2025, the Padres announced that Núñez would be promoted to the major leagues for the first time to start a game in the team’s doubleheader against the Philadelphia Phillies the following day. In four appearances for San Diego, he recorded a 3.86 ERA with two strikeouts across 4⅔ innings, fulfilling a long-awaited dream. His time in the Padres’ bullpen was brief, as the franchise pivoted at the trade deadline just weeks after his debut.
Athletics Era (2025-Present)
On July 31, 2025, Núñez, along with Leo De Vries, Braden Nett, and Henry Baez, was traded to the Athletics in exchange for Mason Miller and JP Sears, a major move that reshaped Oakland’s bullpen and pitching depth. The trade signaled a fresh start for Núñez, who quickly contributed at the major league level for his new club. On August 26, 2025, he recorded his first career win, getting the final out of an extra-inning victory over the Detroit Tigers, a milestone that confirmed his place in the Oakland bullpen.
Since joining the Athletics, Núñez has served as a multi-inning reliever, providing length and late-inning flexibility for the pitching staff. His arrival in Oakland, paired with the other prospects acquired in the deadline deal, gave the Athletics a young core of arms to build around. As the 2025 season progressed, Núñez continued to be a reliable arm out of the bullpen for his new team.
Driving Style and Strengths
Núñez’s profile is built around a power arm that plays well in short bursts, which made the move to the bullpen a natural fit. He generates swings and misses with a lively fastball and has shown the ability to miss bats at every minor league stop, including a 61-strikeout season in 2023 and a 64-strikeout campaign in 2024. His usage in save situations throughout the minors indicates the organization trusts his composure in high-leverage spots, and his scoreless Triple-A stretch in 2025 reinforced that confidence.
Notable Events and Milestones
Among the signature moments of Núñez’s career are his major league debut with the Padres on July 2, 2025, his first career win with the Athletics on August 26, 2025, and the combined no-hitter he was part of with South Bend against the Peoria Chiefs in July 2023. The July 31, 2025 trade that sent him to Oakland, headlined by the return of closer Mason Miller, also stands as one of the most consequential deals of his career, putting him in a position to contribute in the late innings for a retooling Athletics club.
Eduarniel Núñez Career Wins
Across his professional career, Eduarniel Núñez has accumulated a growing list of wins in the minor leagues and, more recently, in the major leagues, reflecting his steady development from international signing to big league reliever. His first MLB victory came on August 26, 2025, when he closed out an extra-inning win over the Detroit Tigers. Below is a summary of his most notable win totals and performances by series.
Minor League Highlights
In 2024, Núñez put together his most successful minor league season, going 9-3 with a 3.28 ERA and five saves across 46 appearances split between Double-A Tennessee and Triple-A Iowa. The previous year, he went 3-1 with a 3.11 ERA and 61 strikeouts in 38 relief outings, while in 2022 he logged a 5-5 record with four saves between South Bend and Tennessee. Earlier in his career, he posted a 1-4 mark with five saves in 2021 and a 1-3 record with the Arizona League Cubs in 2018.
Other Wins & Performances
In 2025, after going 1-0 with two saves in seven scoreless Triple-A outings for El Paso, Núñez recorded his first major league win with the Athletics. His career path also includes a combined no-hitter with South Bend in July 2023 and multiple stints on the Cubs’ 40-man roster bubble, all of which marked stepping stones toward his eventual MLB debut with the Padres and his trade to Oakland.
Eduarniel Núñez Family
Family Background and Racing Lineage
Eduarniel Núñez was born in the Dominican Republic, a country with a deep baseball tradition, though specific verified details about his parents and immediate family are not publicly available. As with many Dominican international signings, his path to professional baseball was supported by family and community networks that encouraged his athletic development from a young age. Further public information about his relatives has not been documented in verified sources.
Personal Life
Publicly verified details about Eduarniel Núñez’s personal life, including his marital status and family, are not extensively documented. He is known primarily for his professional career on the baseball field, and verified personal details remain limited.
2025 Season Performance
The 2025 season marked Eduarniel Núñez’s arrival in Major League Baseball after eight years in the minor leagues. He began the year in the Padres’ system with Double-A San Antonio, earned a promotion to Triple-A El Paso in June, and was dominant there with seven scoreless appearances that included one win, two saves, and 11 strikeouts in 7⅓ innings. That stretch paved the way for his major league debut on July 2, 2025, in a doubleheader against the Philadelphia Phillies, where he finished his four-game San Diego stint with a 3.86 ERA across 4⅔ innings.
On July 31, 2025, the Padres traded Núñez to the Athletics as part of the package that brought Mason Miller and JP Sears to San Diego, a deal that signaled Oakland’s commitment to adding young bullpen arms. In his new uniform, he notched his first career win on August 26, 2025, when he secured the final out of an extra-inning victory over the Detroit Tigers. The Athletics deployed him in multi-inning relief roles down the stretch, and his ability to miss bats gave manager Mark Kotsay a fresh late-inning option.
Looking ahead, Núñez enters the offseason as a young reliever under club control with the Athletics, having shown he can handle the jump from Triple-A to the majors. His combination of swing-and-miss stuff and a willingness to pitch in high-leverage spots should give him a chance to compete for a more defined bullpen role with Oakland in 2026. The 2025 season, though brief at the major league level, was the breakthrough Núñez had been working toward since signing with the Cubs back in 2017.