Why Fenway Park's most famous wall is a nightmare for hitters

Countries & Cities · Published 12 October 2026 Swipe more like this →

In short: Standing 37 feet 2 inches tall, the Green Monster is more than just a landmark. It is a tactical obstacle that transforms potential home runs into doubles, fundamentally altering how the game is played in Boston's iconic Fenway Park.

The Green Monster, the left field wall at Fenway Park, serves a dual purpose: it hides the field from external viewers and acts as a defensive barrier. By standing 37 feet 2 inches high and 310 feet from home plate, it prevents many line drives from becoming home runs, instead turning them into 'wallball doubles.' This phenomenon is so consistent that it has shaped the careers of players like Earl Webb, who set a major-league record with 67 doubles in 1931, though only 33 occurred at Fenway.

The wall's physical composition has evolved significantly since the ballpark's construction in 1912. Originally made of wood, it was covered in tin and concrete in 1934, and later transitioned to hard plastic in 1976. It wasn't until 1947 that the wall received its signature green color; prior to that, it was primarily used for advertisements. Interestingly, the wall's height record was temporarily lost to a 40-foot black wall at Cincinnati's Riverfront Stadium during the early 2000s, but the Green Monster reclaimed its title after that stadium was demolished in 2002.

Beyond its defensive utility, the wall is a piece of living history. It features a manual scoreboard that has existed in various forms since at least 1914. The wall also holds a unique, albeit controversial, piece of equipment: a ladder extending from 13 feet above the ground to the top. While some believe a ball hitting the ladder results in a ground-rule triple, Fenway's actual rules state that a ball striking the ladder and bounding out of play only awards the batter two bases.

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