How old is Jackson Holliday? What to know about Orioles star rookie

After winning 101 games in 2023, part of the reason the Orioles were able to return to the postseason in 2024 was the success of young stars.

As one of the AL wild-card teams this postseason, Baltimore boasts some young talent across its roster, including in its middle infield between shortstop Gunnar Henderson and second baseman Jackson Holliday.

However, it's Holliday who takes the throne as the Orioles' youngest player entering the postseason after just wrapping up his first regular season in the big leagues. 

Here's what to know about Holliday's age, where he's from, his 2024 regular season numbers, and his former status as a top prospect for Baltimore as the team begins its postseason run. 

MORE: Updated MLB 2024 postseason bracket

How old is Jackson Holliday?

Holliday is 20. He's not old enough to legally drink alcohol, yet he's an up-and-coming infielder on a playoff ball club.

In fact, during the Orioles' celebration after clinching a postseason spot, the rest of the team poked fun at the "Baby's First Clinchmas," as Holliday was limited to non-alcoholic champagne.

The @Orioles really did this to Jackson Holliday 😭 pic.twitter.com/XBU32y5wGW

— MLB (@MLB) September 25, 2024

Here's another look at Holliday's "Bird Bath Water" champagne, which he'd also have to continue celebrating with if the Orioles advance at all in the postseason this year. 

Jackson Holliday’s “Bird Bath Water” during the Orioles’ clinch celebration.

The bottle reads: “0.0% alcohol for Orioles under 21.” pic.twitter.com/4mfkNB0YT3

— Jacob Calvin Meyer (@jcalvinmeyer) September 25, 2024

Holliday doesn't turn 21 until December 4th, long after the 2024 MLB postseason concludes. By next season, he'd be able to legally drink in celebrations with his teammates. For now, though, he's considered the team's "baby."

Here's how Holliday's age ranks among the youngest players on the Orioles. 

Where is Jackson Holliday from?

Holliday, the son of former MLB All-Star Matt Holliday, was born in Austin, Texas. However, he went to high school in Stillwater, Okla., where he became a top prospect for the 2022 MLB Draft. 

While he committed to Oklahoma State in his freshman year of high school, Holliday did not end up attending college after being selected first overall by the Orioles. 

MORE: Predictions for the 2024 MLB postseason

Jackson Holliday 2024 stats

Holliday made his highly anticipated debut for Baltimore early in the 2024 season, playing in his first game on April 10. However, it wasn't all smooth sailing for Holliday in his first MLB action. 

After a 2-for-34 (.059) stretch in April, the Orioles sent Holliday back to Triple-A for some time. 

He was recalled by the club toward the end of July after slashing .259/.421/.455 for Baltimore's Triple-A affiliate, the Norfolk Tides. 

Holliday found more of a rhythm through the late regular season and even had a four-hit game on August 16 vs. the Red Sox. Here's a look at his final rookie stats for the 2024 season. 

Jackson Holliday former prospect ranking

In MLB.com's 2023 Top 100 prospect rankings, Holliday ranked 12th overall and behind two other players in the Orioles' farm system: Henderson and Grayson Rodriguez. 

Because Henderson had rookie eligibility remaining from his time with the Orioles in 2022, he was still considered a prospect. Henderson went on to win the 2023 AL Rookie of the Year.

Rodriguez also reached the majors in 2023, becoming another solid piece in the team's young core, which left Holliday as the team's top prospect. 

Holliday earned the top spot in MLB.com's 2024 mid-season Top 100 prospect rankings and was regarded as the league's top prospect until he burned his rookie eligibility over the course of the 2024 season. 

Now, Holliday will be looking to make an impact for Baltimore in its postseason run despite being the youngest player on the team.