What Is 2017 World Baseball Classic rosters

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Last updated: April 15, 2026

Quick Answer: The 2017 World Baseball Classic featured 16 national teams, each with 28-player rosters, including notable MLB stars like Marcus Stroman and Chris Archer. The tournament ran from March 6 to March 22, 2017, with the United States winning its first title.

Key Facts

The 2017 WBC included 16 teams, up from 14 in 2013 due to qualifier expansions.
Each team's roster had exactly 28 players, a rule change from the previous 25-player limit.
Marcus Stroman pitched 15.1 innings for Team USA, earning MVP honors.
Japan's roster included Shohei Ohtani, then a rising star in Nippon Professional Baseball.
The final match drew 51,564 fans at Dodger Stadium, the largest crowd in WBC history.

Overview

The 2017 World Baseball Classic (WBC) was the fourth iteration of the international tournament sanctioned by Major League Baseball (MLB) and the International Baseball Federation. Held from March 6 to March 22, 2017, it featured national teams composed of professional players, including those from MLB, Nippon Professional Baseball (NPB), and other leagues worldwide.

This edition marked a significant expansion, growing from 14 to 16 participating nations after two additional teams qualified through preliminary rounds in 2016. The tournament structure included four pools in the first round, followed by knockout stages, culminating in the United States defeating Puerto Rico 8–0 in the final at Dodger Stadium.

Team Size: Each nation submitted a 28-player roster, an increase from 25 in prior editions to allow for greater depth and injury flexibility.
MLB Participation: Over 50 active MLB players competed, including stars like Adam Jones, Eric Hosmer, and Yoenis Céspedes.
Notable Absences: Some high-profile players, including Bryce Harper and Giancarlo Stanton, declined to participate due to injury or personal reasons.
Host Countries: Games were played across four countries: South Korea, Japan, Mexico, the United States, and Puerto Rico.
Qualification: Four teams—Israel, Colombia, the Netherlands, and Chinese Taipei—advanced from the 2016 qualifiers to join the main tournament.

How It Works

The World Baseball Classic operates under specific eligibility and roster rules to ensure national representation while allowing professional players to compete. Players qualify by citizenship, birthplace, ancestry, or residency, enabling diverse rosters such as Israel's team, which included American Jewish players eligible through heritage.

Eligibility: Players must hold citizenship or have a parent/grandparent born in the country they represent, following WBSC guidelines.
Roster Deadline: Final 28-man rosters were due to MLB and the WBC organizers by February 27, 2017, one week before Opening Round games.
Injury Replacements: Teams could replace injured players before their first game, but not afterward, ensuring roster stability.
Position Limits: Rosters required at least 13 pitchers and two catchers, balancing team composition and strategic needs.
Designated Hitter: The DH rule was used in all games, regardless of host nation’s usual rules, standardizing gameplay.
Pool Format: First-round pools used a modified double-elimination format, with the top two teams advancing to the next stage.

Comparison at a Glance

Below is a comparison of roster sizes, player origins, and participation trends across the 2013 and 2017 WBC editions:

Team	2013 Roster Size	2017 Roster Size	MLB Players (2017)	Notable Additions (2017)
United States	25	28	18	Marcus Stroman, Christian Yelich
Japan	25	28	3	Shohei Ohtani, Seiichi Uchikawa
Dominican Republic	25	28	12	None (defending champions)
Israel	N/A	28	15	First-time participant
Puerto Rico	25	28	7	Francisco Lindor, Yadier Molina

The expansion to 16 teams allowed emerging baseball nations like Israel and Colombia to field competitive squads. Israel’s roster, composed largely of American Jewish players eligible through ancestry, drew international attention and performed strongly, advancing to the second round. The increase in roster size also reflected MLB’s growing support for the event, enhancing team depth and strategic options.

Why It Matters

The 2017 WBC rosters underscored the globalization of baseball and the tournament’s role in elevating national pride and player legacy. By featuring stars from multiple leagues and backgrounds, the event strengthened international ties and showcased baseball’s expanding footprint.

Global Exposure: Broadcast in over 180 countries, the WBC increased visibility for non-MLB players and developing baseball markets.
Player Legacy: Many athletes, like Stroman, cited national team participation as a career highlight, equal to World Series appearances.
Development Incentive: Strong performances by teams like Colombia encouraged investment in youth programs in underrepresented regions.
MLB Endorsement: MLB’s official sanctioning ensured player release and insurance, legitimizing the WBC as a premier event.
Competitive Balance: Roster rules prevented dominance by talent-rich nations, promoting parity and exciting matchups.
Cultural Impact: The tournament fostered national unity, especially in countries like Japan and the Dominican Republic, where baseball is deeply ingrained.

The 2017 World Baseball Classic rosters not only defined a historic tournament but also set a precedent for future editions, emphasizing inclusivity, competitive integrity, and the global spirit of baseball.