List of baseball players who went directly to Major League Baseball

This is a list of baseball players who went directly to the major leagues. They are distinguished as a group by having made their North American professional baseball debut with a Major League Baseball (MLB) franchise without having previously played at the professional level. After their major-league debuts, many of these players appeared in professional leagues other than MLB.

Included are multiple "bonus babies", who joined major-league rosters from 1947 to 1957 and from 1962 to 1965 under the bonus rule, which obligated major-league teams to keep players awarded large signing bonuses on their rosters for two seasons. Excluded are players who, prior to their major-league debut, appeared in any professional baseball game, such as within Minor League Baseball, Negro league baseball, professional leagues outside of North America (such as Nippon Professional Baseball), or independent baseball leagues. A player who participated only in offseason developmental baseball (such as winter league baseball) is not excluded.

The practice of players directly joining a major-league team has become increasingly rare since the MLB draft was instituted in 1965—it has only occurred nine times since 1980, and three times since 2000.^[1]