Player must have played for only one major league franchise, or only one AL/NL team, in their career. For example, Tony Gwynn (only played for one team, an AL/NL team), Buck Leonard (only played for one team, a Negro Leagues team), Jackie Robinson (only played for one team in AL/NL, but additionally played for a team in the Negro Leagues), and Mike Griffin (only played with one team in the AL/NL, but additionally played in the AA and PL) would all qualify.

Since 1957. When paired with a team, the player must have won the Gold Glove award in a season he appeared for that team. When paired with a non-team category, does not need to be in the same season.

Regular season MVP only. Since 1931 (but also includes some precursors to the MVP Award prior to 1931). When paired with a team, the player must have won the MVP award in a season he appeared for that team. When paired with a non-team category, does not need to be in the same season.