- Atlanta Braves pitcher Didier Fuentes is the youngest player during the 2025 season.
MLB teams continue to call up their prospects much earlier, so it’s important to keep track of the sport’s promising young players.
The youngest player in MLB history was Joe Nuxhall, who debuted in the MLB for the Cincinnati Reds on June 10, 1944, at 15 years of age. Nuxhall’s extremely early major league selection was the exception rather than the rule, but there are still plenty of players proving that sometimes career success comes sooner rather than later.
*Note: all ages are as of June 30, which is the date MLB uses to determine a season age.
Ranking Youngest MLB Players in 2025
| PLAYER | TEAM | AGE |
|---|---|---|
| Didier Fuentes | Atlanta Braves | 20 |
| Bryce Eldridge | San Francisco Giants | 20 |
| Samuel Basallo | Baltimore Orioles | 20 |
| Roman Anthony | Boston Red Sox | 21 |
| Jackson Chourio | Milwaukee Brewers | 21 |
| Denzer Guzman | Los Angeles Angels | 21 |
| Caden Dana | Los Angeles Angels | 21 |
| Sal Stewart | Cincinnati Reds | 21 |
| Jackson Holliday | Baltimore Orioles | 21 |
| Bradgley RodrÃguez | San Diego Padres | 21 |
| Moisés Ballesteros | Chicago Cubs | 21 |
| Cole Young | Seattle Mariners | 21 |
| Trey Yesavage | Toronto Blue Jays | 21 |
| Junior Caminero | Tampa Bay Rays | 21 |
| Carter Jensen | Kansas City Royals | 21 |
Who is the Youngest MLB Player in 2025?
Atlanta Braves right-handed pitcher Didier Fuentes became the youngest MLB player during the 2025 season when he made his debut on June 20.
Fuentes made four starts in 2025, posting a 0-3 record with a 13.85 ERA.
Yearly Records for Youngest MLB Players
| Year | Player | Team | Age |
|---|---|---|---|
| 2025 | Didier Fuentes | ATL | 20 |
| 2024 | Jackson Chourio | MIL | 20 |
| 2023 | Junior Caminero | TBR | 19 |
| 2022 | Francisco Alvarez | NYM | 20 |
| 2021 | Wander Franco | TBR | 20 |
| 2020 | Luis Garcia Jr. | WSN | 20 |
| 2019 | Elvis Luciano | TOR | 19 |
| 2018 | Juan Soto | WSN | 19 |
| 2017 | Rafael Devers | BOS | 20 |
| 2016 | Julio Urias | LAD | 19 |
| 2015 | Adalberto Mondesi | KCR | 19 |
| 2014 | Dilson Herrera | NYM | 20 |
| 2013 | Jurickson Profar | TEX | 20 |
| 2012 | Jurickson Profar | TEX | 19 |
| 2011 | Mike Trout | LAA | 19 |
| 2010 | Starlin Castro | CHC | 20 |
| 2009 | Madison Bumgarner | SFG | 19 |
| 2008 | Clayton Kershaw | LAD | 20 |
| 2007 | Justin Upton | ARI | 19 |
| 2006 | Felix Hernandez | SEA | 20 |
| 2005 | Felix Hernandez | SEA | 19 |
| 2004 | B.J. Upton | TBR | 19 |
| 2003 | Edwin Jackson | LAD | 19 |
| 2002 | Wily Mo Pena | CIN | 20 |
| 2001 | Wilson Betemit | ATL | 19 |
| 2000 | Jon Garland | CHW | 20 |
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