Jack Winkler Bio
Jack Tanner Winkler is an American professional baseball second baseman who made his Major League Baseball debut with the Miami Marlins in 2025. Born on November 4, 1998, in Littleton, Colorado, Winkler played college baseball for the San Francisco Dons from 2018 to 2021. After being selected by the Oakland Athletics in the tenth round of the 2021 MLB draft, he climbed through the minor leagues before earning his first big league call-up. His professional career has showcased skilled batting and base running, demonstrating his potential as a versatile infielder at the sport’s highest level.
Early Life and Background
Winkler was born on November 4, 1998, in Littleton, Colorado. He attended Chatfield Senior High School, where he excelled academically and graduated as salutatorian in 2017. His performance in high school laid the foundation for his collegiate baseball career and eventual professional aspirations.
Path to Professional Baseball
Following his graduation from Chatfield Senior High School, Winkler continued his baseball career at the University of San Francisco. He played as an infielder for the San Francisco Dons from 2018 to 2021, developing his skills against collegiate competition. In the summer of 2019, he gained additional experience by playing for the Wareham Gatemen of the Cape Cod Baseball League, one of the premier collegiate summer leagues in the United States.
Jack Winkler Career
Minor League Development (2021–2024)
Winkler was selected 308th overall by the Oakland Athletics in the tenth round of the 2021 MLB draft. He began his professional career that same year, splitting time between the Rookie-level Arizona Complex League Athletics and the Single-A Stockton Ports. In his debut professional season, he appeared in 24 total games and hit .191.
In 2022, Winkler advanced to the High-A Lansing Lugnuts, where he posted a .267 batting average with a .355 on-base percentage and a .379 slugging percentage. He hit four home runs, drove in 25 runs, and recorded four stolen bases across 60 appearances. The following season, he split time between the Lansing Lugnuts and the Double-A Midland RockHounds, combining to hit .245 with seven home runs, 58 RBI, and 22 stolen bases in 117 games between both affiliates.
Milestone Season and MLB Debut (2025)
On December 11, 2024, the Miami Marlins selected Winkler in the minor league phase of the 2024 Rule 5 draft. He began the 2025 season with the Triple-A Jacksonville Jumbo Shrimp. His strong performance earned him a promotion to the major leagues on May 30, 2025, when he was selected to the 40-man roster and called up for the first time. He made his MLB debut that same day, going 0-for-4 in his first game.
Winkler appeared in 11 games for the Marlins during his initial major league stint, recording two hits in 12 at-bats (.167) with one stolen base. On August 4, the Marlins designated him for assignment. He cleared waivers and was sent outright to Triple-A Jacksonville on August 6. He worked his way back to the majors, as the Marlins selected his contract on September 5, adding him back to the active roster. He went 2-for-4 (.500) in three games to conclude the 2025 season.
Playing Style and Strengths
Winkler has developed as a contact hitter with solid plate discipline throughout his minor league career. His experience as an infielder provides defensive versatility, and his stolen base totals indicate his ability to contribute on the bases. His progression through the Athletics’ minor league system demonstrated consistent improvement in extra-base power and run production.
Notable Milestones
Winkler’s most significant career milestone remains his MLB debut on May 30, 2025, with the Miami Marlins. His recall in September 2025 and strong performance at the plate to close the season showed his ability to compete at the major league level. The journey from a tenth-round draft pick to MLB contributor represents his perseverance and development as a professional athlete.
Jack Winkler Career Statistics
Throughout his professional career, Winkler has accumulated solid numbers across multiple levels in the minor leagues. His best statistical season came in 2022 with the Lansing Lugnuts, where he posted a .267 batting average.
Minor League Highlights
Winkler’s most productive minor league season came in 2022 with the Lansing Lugnuts, where he hit .267 with four home runs and 25 RBI in 60 games. His 2023 season with the Midland RockHounds saw him hit .245 with 58 RBI and 22 stolen bases across 117 combined appearances. In 2024, he appeared in 127 games with the RockHounds, adding eight home runs, 57 RBI, and 28 stolen bases to his career totals.
Major League Statistics
In his rookie MLB season with the Miami Marlins in 2025, Winkler appeared in 14 total games. He recorded four hits in 16 at-bats for a .250 batting average. He did not hit a home run or drive in any runs during his major league appearances.
| Level | G | AB | H | AVG | HR | RBI | SB |
|---|---|---|---|---|---|---|---|
| MLB (2025) | 14 | 16 | 4 | .250 | 0 | 0 | 1 |
| MiLB (Career) | 328 | 1212 | 305 | .252 | 19 | 140 | 54 |
Family and Personal Life
Background
Winkler was born and raised in Littleton, Colorado, and attended Chatfield Senior High School. His family supported his athletic pursuits throughout his youth and high school career, enabling him to develop into a Division I collegiate player.
Current Status
Following the 2025 season, Winkler was removed from the Marlins’ 40-man roster on November 6, 2025, and elected free agency. As of the end of 2025, he remains available to sign with any MLB organization. His path from Colorado through the minor leagues and into the majors demonstrates his dedication to the sport and his ability to compete at the highest professional level.
2025 Season Performance
The 2025 season marked Winkler’s breakthrough year to Major League Baseball. After beginning the year with the Triple-A Jacksonville Jumbo Shrimp, he earned his first major league call-up in late May. His initial stint with the Marlins lasted until early August, during which he appeared in 11 games and struggled at the plate with a .167 average.
Following his outright assignment to Triple-A, Winkler refocused his approach and returned to the majors in September with renewed confidence. He responded with a .500 batting average in his limited opportunities, going 2-for-4 in three games to close the season. This late-season surge demonstrated his ability to make adjustments and compete at the major league level.
His 2025 season concluded with his election of free agency on November 6. The experience gained throughout the season, from his debut to his strong finish, positions Winkler as a player with the tools and determination to secure another MLB opportunity. Teams seeking a versatile infielder with minor league production and major league experience may view him as an undervalued asset heading into the 2026 season.