Carlsbad played as a minor league affiliate of the Chicago Cubs from 1958 to 1961 and hosted home games at Montgomery Field.
In 1959, at Montgomery Field in Carlsbad, Potasher player Gil Carter hit a home run claimed have traveled 733 feet, possibly the longest in professional baseball history.
The ball carried over the left field wall, soared past two city streets and landed in a peach tree.
Carter's hometown paper, The Topeka Capital-Journal, said "the blast is considered the longest home run in baseball history.
However, aerial photographs measurements put the distance at 700–733 feet, which would make it the longest home run ever hit in professional baseball.