Jack Tanner Winkler (born November 4, 1998) is an American professional

baseball Baseball is a bat-and-ball games, bat-and-ball sport played between two team sport, teams of nine players each, taking turns batting (baseball), batting and Fielding (baseball), fielding. The game occurs over the course of several Pitch ...

infielder An infielder is a baseball player stationed at one of four defensive "infield" positions on the baseball field, between first base and third base. Standard arrangement of positions In a game of baseball, two teams of nine players take turns pla ...

for the

Miami Marlins The Miami Marlins are an American professional baseball team based in Miami. The Marlins compete in Major League Baseball (MLB) as a member club of the National League (baseball), National League (NL) National League East, East Division. The ...

Major League Baseball Major League Baseball (MLB) is a professional baseball league composed of 30 teams, divided equally between the National League (baseball), National League (NL) and the American League (AL), with 29 in the United States and 1 in Canada. MLB i ...

(MLB). He made his MLB debut in 2025.

Amateur career

A native of

Littleton, Colorado Littleton is a home rule municipality city located in Arapahoe, Douglas, and Jefferson counties, Colorado, United States. Littleton is the county seat of Arapahoe County and is a part of the Denver–Aurora–Lakewood, CO Metropolitan Stati ...

, Winkler played

college baseball College baseball is baseball that is played by Student athlete, student-athletes at institutions of higher education. In the United States, college baseball is sanctioned mainly by the National Collegiate Athletic Association (NCAA); in Japan, ...

for the

University of San Francisco The University of San Francisco (USF) is a Private university, private Society of Jesus, Jesuit university in San Francisco, California, United States. Founded in 1855, it has nearly 9,000 students pursuing undergraduate and graduate degrees ...

. In 2019, he played

collegiate summer baseball Collegiate summer baseball leagues are amateur baseball leagues in the United States and Canada featuring players who have attended at least one year of college and have at least one year of athletic eligibility remaining. Generally, they operat ...

with the

Wareham Gatemen The Wareham Gatemen are a collegiate summer baseball team based in Wareham, Massachusetts. The team is a member of the Cape Cod Baseball League (CCBL) and plays in the league's West Division. The Gatemen play their home games at Clem Spillane Fie ...

of the

Cape Cod Baseball League The Cape Cod Baseball League (CCBL or Cape League) is a collegiate summer baseball wooden bat league located on Cape Cod in the U.S. state of Massachusetts. One of the nation's premier collegiate summer leagues, the league boasts over 1,000 forme ...

Professional career

Oakland Athletics

Winkler was drafted by the

Oakland Athletics The Oakland Athletics (frequently referred to as the Oakland A's) were an American Major League Baseball (MLB) team based in Oakland, California from 1968 to 2024. The Athletics were a member club of the American League (AL) American League We ...

in the 10th round, with the 308th overall selection, of the

2021 Major League Baseball draft The 2021 Major League Baseball draft took place on July 11–13, 2021. In conjunction with the 2021 Major League Baseball All-Star Game, the draft was held in Denver. The draft assigned amateur baseball players to MLB teams. The draft order was s ...

. He split his first professional season between the rookie-level

Arizona Complex League Athletics The Arizona Complex League Athletics are a Minor League Baseball team based in Mesa, Arizona, which plays as a Rookie-level team in the Arizona Complex League and has served as a farm team for the Athletics organization since 1988. They play thei ...

and Single-A

Stockton Ports The Stockton Ports are a Minor League Baseball team of the California League and the Single-A affiliate of the Athletics. They are located in Stockton, California, and are named for the city's seaport. The team plays its home games at Banner I ...

, hitting .191 in 24 total games. Winkler spent the 2022 season with the High-A

Lansing Lugnuts The Lansing Lugnuts are a Minor League Baseball team of the Midwest League and the High-A affiliate of the Athletics (baseball), Athletics. They are located in Lansing, Michigan, and play their home games at Jackson Field (Lansing), Jackson Fie ...

, batting .267/.355/.379 with four home runs, 25 RBI, and four stolen bases across 60 appearances. Winkler split the 2023 campaign between Lansing and the Double-A

Midland RockHounds The Midland RockHounds are a Minor League Baseball team based in Midland, Texas. The team, which plays in the Texas League, is the Double-A affiliate of the Athletics major league club. The RockHounds play in Momentum Bank Ballpark, which ope ...

. In 117 appearances for the two affiliates, he slashed a combined .245/.331/.359 with seven home runs, 58 RBI, and 22 stolen bases. Winkler returned to Midland for the 2024 season, making 127 appearances and hitting .223/.310/.345 with eight home runs, 57 RBI, and 28 stolen bases.

Miami Marlins

On December 11, 2024, the

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 The Jacksonville Jumbo Shrimp are a Minor League Baseball team of the International League (IL) and the Triple-A (baseball), Triple-A affiliate of the Miami Marlins. They are located in Jacksonville, Florida, and are named for shrimp caught in th ...

. On May 30, 2025, Winkler was selected to the

40-man roster A Major League Baseball roster is a list of players who are allowed, by league agreement, to play for a Major League Baseball (MLB) team. Each MLB team maintains two rosters: an active roster of players eligible to participate in an MLB game, an ...

and promoted to the major leagues for the first time.

References

External links

San Francisco Dons bio
{{DEFAULTSORT:Winkler, Jack 1998 births Living people Arizona Complex League Athletics players Baseball players from Colorado Jacksonville Jumbo Shrimp players Lansing Lugnuts players Major League Baseball infielders Miami Marlins players Midland RockHounds players San Francisco Dons baseball players Sportspeople from Littleton, Colorado St. Cloud Rox players Stockton Ports players Wareham Gatemen players 21st-century American sportsmen