- Jordan Walker is the youngest active MLB player in the 2023 season.
- Walker is 20 years old and plays for the St. Louis Cardinals.
The average age of active players across the MLB in 2023 is around 27, but as of Opening Day, there are 14 active players aged 22 or younger. In fact, the league’s youngest player, Jordan Walker of the St. Louis Cardinals, is already at the plate at just 20 years old.
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 2023 Opening Day.
Ranking Youngest MLB Players in 2023
| PLAYER | TEAM | AGE |
|---|---|---|
| Jordan Walker | St. Louis Cardinals | 20 |
| Ezequiel Tovar | Colorado Rockies | 21 |
| Gunnar Henderson | Baltimore Orioles | 21 |
| Anthony Volpe | New York Yankees | 21 |
| Michael Harris II | Atlanta Braves | 22 |
| Wander Franco | Tampa Bay Rays | 22 |
| Julio Rodríguez | Seattle Mariners | 22 |
| C.J. Abrams | Washington Nationals | 22 |
| Riley Greene | Detroit Tigers | 22 |
| Corbin Carroll | Arizona Diamondbacks | 22 |
| Bobby Witt Jr. | Kansas City Royals | 22 |
| Luis Garcia | Washington Nationals | 22 |
| Nolan Gorman | St. Louis Cardinals | 22 |
| Alek Thomas | Arizona Diamondbacks | 22 |
Jordan Walker — 20 years old
As if being the youngest player in the league isn’t enough, Walker is also featured on nearly every MLB Rookies to Watch list for the 2023 season and leads the NL Rookie of the Year odds at +350.
Walker was selected 21st overall by the Cardinals in the 2020 MLB draft and made his major league debut on Opening Day 2023. Having played third base throughout his career, he began playing in the outfield in August 2022, and that seems to be where St. Louis is interested in utilizing him this season.
During 2022 with the Springfield Cardinals (AA), Walker slashed .306/.388/.510 with 19 home runs and 68 RBIs in 461 at-bats.
1st at bat ✔️
1st hit ✔️Jordan Walker is ready for the show! pic.twitter.com/mlBFTljl7v
— St. Louis Cardinals (@Cardinals) March 30, 2023
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