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Why Aaron Nola and more American-born WBC stars play for Italy instead of Team USA

You may have noticed a whole lot of familiar faces in the Italian dugout at the World Baseball Classic.
2026 World Baseball Classic - Pool B - Italy v Mexico
2026 World Baseball Classic - Pool B - Italy v Mexico | Kenneth Richmond/GettyImages

Key Points

Bullet point summary by AI

  • The U.S. narrowly escaped elimination after a stunning loss to Italy in WBC pool play, setting up a potential final showdown.
  • Multiple MLB stars with American roots are suiting up for Italy due to ancestral ties, fulfilling WBC eligibility rules.
  • These players' decisions to honor their heritage could dramatically alter the tournament's outcome this season.

Team USA survived a crushing loss to Italy in pool play of the World Baseball Classic, and suddenly the two teams might be on a collision course to face off again in the WBC Final. But first, Italy must get by Venezuela on Monday night. Italy's roster is littered with familiar names – including Aaron Nola of the Philadelphia Phillies, who is slated to pitch on Monday against Ronald Acuña Jr. and Co. This has led to some confusion among American baseball fans. Namely, why is Nola pitching for Italy in the World Baseball Classic to begin with?

Nola is a Baton Rouge native but decided to rep the Azzurri at this year's WBC. He's not the only MLB player (or coach/manager) who decided to do so, either. Look no further than, say Jac Caglianone and Vinnie Pasquantino of the Kansas City Royals. Let's dive in to this confusion, and why it's perfectly legal per WBC rules.

Why Aaron Nola, Vinnie Pasquantino and more MLB stars play for Italy in the World Baseball Classic

Vinnie Pasquantino celebrates with fans after defeating the United States at Daikin Park.
Vinnie Pasquantino celebrates with fans after defeating the United States at Daikin Park. | Thomas Shea-Imagn Images

Nola is just one of many players with Major League experience on Team Italy's roster this year. The list also includes young Royals stars Vinnie Pasquantino and Jac Caglianone as well as Marlins outfielder Jakob Marsee and White Sox catcher Kyle Teel.

  • RHP Aaron Nola, Philadelphia Phillies
  • 1B Vinnie Pasquantino, Kansas City Royals
  • C Kyle Teel, Chicago White Sox
  • OF Jac Caglianone, Kansas City Royals
  • OF Jakob Marsee, Miami Marlins
  • RHP Michael Lorenzen, Colorado Rockies
  • OF Dominic Canzone, Seattle Mariners
  • INF Jon Berti, free agent
  • INF Thomas Saggese, St. Louis Cardinals
  • INF Miles Mastrobuoni, Seattle Mariners
  • INF Zach Dezenzo, Houston Astros
  • RHP Greg Weissert, Boston Red Sox
  • RHP Adam Ottavino, free agent

All of those players were born and raised in the United States, and all of them could have played for the Americans if manager Mark DeRosa had made the call. But where you born is only a piece of the player eligibility puzzle for the WBC. Nolan Arenado, a California native, has played in more than one iteration of the WBC for Team USA but is competing this year for Puerto Rico. Even Ottavino, in the bullpen for Italy this year, played for the U.S. in 2023.

So, just what determines the country (or countries) for which a player is eligible to compete?

World Baseball Classic eligibility rules, explained

Austin Wells
2026 World Baseball Classic Pool D: Team Netherlands v Team Dominican Republic | Kelly Gavin/GettyImages

The most straight-forward means of eligibility is citizenship: If you're a citizen of that country (i.e., you hold a valid passport) at least three months before the WBC begins, you're all set. But that's far from the only path; if either you or a parent was born in a given country, chances are you can compete for that country. Here's what the World Baseball Classic rulebook says about player eligibility:

• The player is a permanent legal resident
• The player was born the country (or territory)
• The player has at least one parent who is/was a citizen
• The player has at least one parent who was born in the country (or territory)

As an example, Yankees catcher Austin Wells, who was born in Arizona and grew up in Nevada, is the starting catcher for the Dominican Republic team because his mother, Michelle is Dominican. That's a similar path to the one Nola and others took to playing for Italy.

Aaron Nola's connection to Italy

Nola throws a pitch during the fourth inning against the New York Mets at Citizens Bank Park.
Nola throws a pitch during the fourth inning against the New York Mets at Citizens Bank Park. | Eric Hartline-Imagn Images

Nola is a Louisiana native, but he's Italian on his father's side.

"It's an Italian name," Aaron's brother, former big leaguer Austin Nola, once told MiLB.com of their shared surname. "My great-grandparents, they came over from Sicily and settled in Baton Rouge."

Like Nola, Caglianone's great-grandparents on his father's side came over to the U.S. from Italy. Pasquantino also has Italian heritage on his father's side. All of them may have first wanted to play for Team USA, but sporting the Italian colors has offered them a chance to connect with their family histories — and just maybe play spoiler, too.

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