He was born in Marion, Ohio, and played youth baseball with future president Warren G. Harding.

Allen made his NL debut in 1890 with the Phillies, and in his day was considered a power hitter, hitting a career-high eight home runs in 1893.

The Chicago Tribune reported that cheekbone fragments had entered Allen's brain.

The paper suggested that Allen had sustained permanent damage to his eyesight and his mind.

You can help Wikipedia by expanding it.This biographical article relating to an American baseball shortstop is a stub.