Note: 1,000 career games played are needed to make this list of the one-thousand greatest on base plus slugging leaders, raw averages are presented in parenthesis to further distinguish the top one-hundred, and a bold faced entry denotes that the player was active during the previous Major League season.
Primary active transport, directly uses metabolic energy (ATP) to transport molecules across a membrane.
Polaris A, the supergiant primary component, is a low-amplitude Population I classical Cepheid variable, although it was once thought to be a type II Cepheid due to its high galactic latitude.