This Day in History: 2000-12-03

December 3, 1968: The MLB Rules Committee votes to decrease the size of the strike zone and decrease the height of the pitcher’s mound from 15 to 10 inches to re-balance the hitter-pitcher match-up following a season when Bob Gibson compiled a 1.12 ERA, Luis Tiant produced an ERA of 1.68, and Carl Yastrzemski led the AL with a batting average of .301.