spring training teams can play colleges, minor league baseball clubs, intra-squad games (members of the same team play against each other), split-squad games (games when one team is scheduled for two games in one day, so the team splits into two squads and each squad plays in one of the games), and b games (unofficial spring training games where statistics and standings are not counted). in years when the world baseball classic occurs, the national teams in the tournament prepare by playing major league teams. the players union will sometimes field a team if many free agents are unsigned by the start of spring training.