<P> The coach's boxes, located behind first and third base, are where the first and third base coaches are supposed to stand, although coaches often stand outside the box . This is permissible as long as the coach does not interfere with play and the opposing team does not object (in which case the umpire shall ensure that all coaches on both teams must abide by the boundaries of the coach's boxes). The coach's boxes are marked with chalk or paint . In the early days of baseball, the term "coacher's box" was used, as "coach" was taken to be a verb . As the term "coach" evolved into a noun, the name of the box also changed . </P> <Table> <Tr> <Td> </Td> <Td> This section possibly contains original research . Please improve it by verifying the claims made and adding inline citations . Statements consisting only of original research should be removed . (May 2012) (Learn how and when to remove this template message) </Td> </Tr> </Table> <Tr> <Td> </Td> <Td> This section possibly contains original research . Please improve it by verifying the claims made and adding inline citations . Statements consisting only of original research should be removed . (May 2012) (Learn how and when to remove this template message) </Td> </Tr> <P> The basic layout of the diamond has been little changed since the original Knickerbocker Rules of the 1840s . The distance between bases was already established as 90 feet (27.5 m), which it remains to this day . Through trial and error, 90 feet (27.5 m) had been settled upon as the optimal distance . 100 feet (30.5 m) would have given too much advantage to the defense, and 80 feet too much to the offense . </P>

How far is it from pitchers mound to home plate