The World Baseball Classic (WBC) allows MLB players to participate, featuring 20 teams, with 16 qualifying based on their 2023 performance. Key rules include a pitch clock, the designated hitter, permissible defensive shifts, and a mercy rule for substantial leads. Pitch count limits vary by tournament stage, and the three-batter minimum rule applies to pitchers. Replay reviews follow MLB guidelines, with tiebreakers based on head-to-head records and earned runs among other criteria.
