Jonathan Loáisiga Bio
Jonathan Stanley Loáisiga Estrada, born on November 2, 1994, in Nicaragua, is a Nicaraguan professional baseball pitcher known for his tenure with the New York Yankees of Major League Baseball (MLB). He made his major league debut in 2018 and gained attention for becoming the first Nicaraguan player to appear for the Yankees. After spending the bulk of his career in New York, Loáisiga joined the Arizona Diamondbacks organization in 2026, continuing his career as a relief pitcher.
A right-handed pitcher with a reputation for attacking hitters with a heavy fastball, Loáisiga has built his career primarily out of the bullpen while occasionally serving as a starting pitcher. He has represented Nicaragua in international competition, including the World Baseball Classic.
Early Life and Background
Jonathan Loáisiga was born in Nicaragua and grew up surrounded by baseball. His father, Stanley Loáisiga, played in the Montreal Expos minor league system, and his grandfather was an accomplished professional pitcher in Nicaragua. This family connection to the sport shaped Loáisiga’s early development and gave him a clear path into professional baseball.
Loáisiga grew up watching fellow Nicaraguan Dennis Martínez, the first Nicaraguan-born pitcher to win 100 games in the major leagues, and idolized him throughout his childhood. His brother Mike also pursued professional baseball, signing with the Los Angeles Dodgers at age 17 and playing in the team’s minor leagues until 2018. The baseball traditions of his family and country provided a strong foundation for Loáisiga’s career.
Path to Baseball
Loáisiga signed his first professional contract on September 23, 2012, when he agreed to terms with the San Francisco Giants as an international free agent. He made his professional debut in 2013 with the Dominican Summer League Giants, where he posted an 8–1 record with a 2.75 earned run average and 1.11 WHIP in 13 games started. The strong start established him as a promising prospect in the Giants’ organization.
Loáisiga missed the 2014 and 2015 seasons due to injuries, and the Giants released him on May 30, 2015. He signed with the New York Yankees on February 9, 2016, beginning a new chapter in his career. After pitching one game for the Charleston RiverDogs, he suffered an injury that required Tommy John surgery. The Yankees added him to their 40-man roster after the 2016 season, signaling their confidence in his long-term potential.
Jonathan Loáisiga Career
Early Career (2016–2017)
Following his Tommy John surgery, Loáisiga returned to action in 2017, pitching for both the Gulf Coast League Yankees and Staten Island Yankees. He posted a combined 1–1 record with a 1.38 ERA in 11 starts, demonstrating that he had recovered his form. The Yankees added him to the 40-man roster to protect him from the Rule 5 draft, and he began 2018 with the Tampa Yankees of the Low-A Florida State League.
Loáisiga opened the 2018 season with a 3–0 record and a 1.35 ERA in four starts, earning a promotion to the Trenton Thunder of the Double-A Eastern League. In Trenton, he posted a 4.32 ERA across six starts, but impressed by striking out 32 batters in 25 innings. His performance placed him on the radar of the major league club.
New York Yankees Breakthrough (2018–2025)
After Yankees starter Masahiro Tanaka went on the injured list, Loáisiga was called up to the majors in June 2018, skipping the Triple-A level. He made his MLB debut on June 15, 2018, pitching five scoreless innings and earning the win. In that debut, he became the first Nicaraguan to play for the New York Yankees. He made four starts for the Yankees, pitching to a 3.00 ERA before being optioned to the Scranton/Wilkes-Barre RailRiders of the Triple-A International League on July 2. He was recalled to the Yankees on September 2 after roster expansion and finished the year with 24+2⁄3 innings for the Yankees in 2018. In 2019, he pitched 31+2⁄3 innings across 15 appearances for the Yankees.
Loáisiga broke camp with the Yankees in 2020, serving as a swing man who started occasionally and also came out of the bullpen. On April 24, 2021, he recorded his first career save against the Cleveland Indians. Two months later, on June 25, 2021, he became the first relief pitcher in Yankees history to strike out four batters in one inning, striking out Michael Chavis, Alex Verdugo, J. D. Martinez, and Xander Bogaerts of the Boston Red Sox in the seventh inning. He finished 2021 with 18 holds, a 2.17 ERA, and 69 strikeouts in 70+2⁄3 innings. In July 2021, Loáisiga, along with teammates Nestor Cortes and Wandy Peralta, tested positive for COVID-19, which sent him to the COVID-19 injured list and forced the postponement of a Yankees game against the Boston Red Sox.
In 2022, Loáisiga went 2–3 with a 4.13 ERA. On May 1, 2023, it was announced that he would be out until August after undergoing surgery to remove a bone spur from his right elbow. He was activated from the injured list on August 7, 2023, and went on to log a 3.06 ERA with 6 strikeouts across 17+2⁄3 innings in 17 relief outings. He made three scoreless appearances for the Yankees to begin the 2024 season, but was placed on the 60-day injured list with a right flexor strain on April 5, 2024. The next day, it was revealed that he had a torn UCL in the right elbow, requiring surgery and prematurely ending his 2024 season. On December 11, 2024, he signed a one-year contract to return to the Yankees with a club option for 2026. In 30 appearances for New York in 2025, he registered an 0–1 record and 4.25 ERA with 25 strikeouts and one save across 29+2⁄3 innings pitched. On August 28, 2025, it was announced that he would miss the remainder of the 2025 season due to a flexor strain. The Yankees declined his club option on November 5, 2025, making him a free agent.
Arizona Diamondbacks Era (2026–Present)
On January 13, 2026, Loáisiga signed a minor league contract with the Arizona Diamondbacks. On March 25, 2026, the Diamondbacks selected his contract after he made the team’s Opening Day roster, marking his return to the major leagues. He joined the Arizona bullpen looking to reestablish himself as a reliable late-inning option.
Driving Style and Strengths
Loáisiga is a right-handed pitcher best known for a heavy fastball and the ability to generate swings and misses with a high spin rate. He has shown the versatility to start games and pitch in relief, though most of his major league success has come out of the bullpen. His mid-90s fastball and sharp breaking pitches allow him to miss bats at a high rate, and his competitive nature on the mound has made him a trusted arm in high-leverage situations.
Notable Events and Milestones
Loáisiga became the first Nicaraguan to play for the New York Yankees when he debuted on June 15, 2018. He also became the first relief pitcher in Yankees history to strike out four batters in one inning on June 25, 2021, against the Boston Red Sox. He earned his first career save on April 24, 2021, against the Cleveland Indians.
Jonathan Loáisiga Career Wins
Jonathan Loáisiga has built his major league resume largely as a reliever, with the bulk of his workload coming in the New York Yankees bullpen between 2018 and 2025. He earned the win in his major league debut on June 15, 2018, against the New York Yankees’ opponent that day, and went on to compile a 21–14 career win–loss record with a 3.47 ERA and 249 strikeouts through June 19, 2026.
New York Yankees Highlights
During his time with the New York Yankees, Loáisiga recorded an 8–1 record with a 2.75 ERA in his first professional season in 2013, a 1–1 record with a 1.38 ERA in 2017, and a 3.00 ERA in his first four major league starts in 2018. He recorded his first major league save on April 24, 2021, and posted a career-best 2.17 ERA in 2021 with 69 strikeouts in 70+2⁄3 innings. In 2025, he posted a 4.25 ERA with 25 strikeouts in 29+2⁄3 innings across 30 appearances.
Other Wins and Performances
Loáisiga played for the Nicaraguan national baseball team in the 2017 World Baseball Classic qualifiers, pitching 2.1 innings over two games and earning the win over the Czech Republic national baseball team in extra innings. He was also selected to the Nicaraguan squad for the 2023 World Baseball Classic after Nicaragua advanced from the qualifying round.
Jonathan Loáisiga Family
Family Background and Baseball Lineage
Jonathan Loáisiga comes from a family with deep roots in professional baseball. His father, Stanley Loáisiga, played in the Montreal Expos minor league system, and his grandfather was an accomplished professional pitcher in Nicaragua. His brother Mike signed with the Los Angeles Dodgers at age 17 and played in the team’s minor leagues until 2018. The Loáisiga family has produced multiple professional players across different organizations and countries.
Personal Life
Loáisiga has kept his personal life largely out of the public eye. Details about his spouse, children, and residence are not publicly confirmed in available sources.
2025 Season Performance
The 2025 season proved to be a difficult one for Jonathan Loáisiga with the New York Yankees. He made 30 appearances for New York, registering an 0–1 record and 4.25 ERA with 25 strikeouts and one save across 29+2⁄3 innings pitched. On August 28, 2025, it was announced that he would miss the remainder of the season due to a flexor strain, ending his year prematurely for a second consecutive season.
On November 5, 2025, the Yankees declined Loáisiga’s club option, making him a free agent. He subsequently signed a minor league contract with the Arizona Diamondbacks on January 13, 2026, and made the team’s Opening Day roster after his contract was selected on March 25, 2026. Through June 19, 2026, he was 0–0 with Arizona, and his career totals stood at 21–14 with a 3.47 ERA and 249 strikeouts.
Looking ahead, Loáisiga’s role with the Arizona Diamondbacks will be determined by his health and performance out of the bullpen. After two consecutive injury-shortened seasons, his ability to stay on the mound will be a key storyline for the remainder of his career.