Click a letter for more information. Measurements for red letters are absolute.
See Batter's & Catcher's Box
From home to 1st or 3rd, this measurement is taken from the back point (apex) of home plate to the farthest corner of each of 1st or 3rd base along the foul line. Between the bases, the measurement is taken from the outfield side of 1st or 3rd base at the corner by the foul line and extends to the center of 2nd base.
BASEBALL: From the center of the mound outward. SOFTBALL: From the front center of the pitching rubber outward. The circle that is scribed from this radius is what is chalked to define the “Softball Pitcher’s Circle.”