Fenway Park: The History, the Dimensions and How the Park Plays

By 4Baseball Staff · November 5, 2026 · 12 min read

A guide to Fenway Park, the Boston Red Sox's home since 1912, covering the earlier park, the odd dimensions, how the Green Monster shapes the game and what to know before a visit.

Fenway Park is the ballpark where the Boston Red Sox have played since the 1912 season, and it is the oldest park in the major leagues. Almost everything about it is a response to a cramped city lot: a left-field wall that sits close to home plate, a right-field corner that is closer still, and a center-field stretch that runs deeper than either line. The result is a park that rewards some hitters and punishes others in ways that a ballpark built from a blank page never would.

This guide covers where the club played before Fenway, what the site's own reference data says about the dimensions, how the park has played in the historical record's park factors, and what a visitor should know. It sticks to what can be measured or documented, and it leaves out prices, concession lists and transit details because those change from season to season. Check the club's official site for anything you need to book.

One word of caution before the details. A park factor is a summary of a few seasons of home and road games, and it blends the park with the players who happened to play in it. Fenway's reputation as a hitter's park is earned, but it is also a park where right-handed power hitters have often had to adapt, and where doubles are worth more than home runs in the way people usually count them. The numbers below show both.

Before Fenway: the Huntington Avenue Grounds

The franchise began in 1901 as the Boston Americans, one of the founding clubs of the American League, and the historical record lists its first home as the Huntington Avenue Grounds. The club played there from 1901 through 1911, eleven seasons in all. The best season attendance recorded there was 668,965, a figure that looks small now but was a strong gate in the first decade of the century.

The Huntington Avenue Grounds is the park that hosted the first modern World Series. In 1903 the Americans beat the Pittsburgh club five games to three in a best-of-nine format. The pitching staff in those years was built around Cy Young, who won 192 games for the club between 1901 and 1908, tied with Roger Clemens for the franchise record. The historical park factor for the club in 1911, the last season there, was 99, which is close to neutral.

The move was not about the quality of the old park so much as the opportunity of a new one. Wooden ballparks of that era were being replaced by steel-and-concrete parks around the major leagues, and Boston built its new park in the Fenway neighborhood. The club was by now known as the Red Sox, a name it had carried since 1908. If you want the whole arc from 1901 on, the history of the Boston Red Sox lays out each era.

Opening in 1912 and the rebuild that followed

Historical divides the park into two periods, which is a useful hint about its history. Fenway Park I covers 1912 through 1933, and Fenway Park II covers 1934 through 2022. The break reflects a major reconstruction in the early 1930s, after which the park took the shape most fans would recognise. The database then drops the numeral for 2023 through 2025 and simply calls it Fenway Park, so a search for the park by name in a team table can return three different strings.

The first season in the new park was a good one. In 1912 the Red Sox went 105-47, the best winning percentage in franchise history among seasons of 100 or more games, and then beat the Giants in the World Series, four games to three. Tris Speaker won the American League's Most Valuable Player award that year. Fenway Park I never drew a crowd like the later parks did, and its best season attendance in the historical record, 597,096, came in that championship year.

The club then won three more titles before the 1918 season ended, in 1915, 1916 and 1918, and then went quiet for decades. The park itself outlasted the drought. Between 1918 and 2004 Boston won four pennants (1946, 1967, 1975 and 1986) and lost the World Series each time, each in seven games. That sequence is a large part of why the building matters to people who never saw a game in it. The best Boston Red Sox seasons and every October run goes through each of them.

The dimensions, from the site's reference data

The site's own reference file for the park gives these distances and facts. Treat them as the data the site uses, not as a survey, because outfield walls are marked in whole feet and clubs adjust them from time to time.

The spread is the story. Foul pole to foul pole, the left-field line is 310 feet and the right-field line is 302 feet, both short by the standards of recent parks. But the gap from the line to the alleys is large: 379 feet in left-center and 380 feet in right-center, then 390 feet in center. That is a rise of about 70 feet from the left-field line to left-center and nearly 80 from the right-field line to right-center. A hitter who pulls a fly ball down either line has a short trip to the seats. A hitter who drives the ball to the middle of the field has the longest run of all, with center the deepest of the five listed points, though only by about ten feet over the alleys. The two alleys are almost the same distance, one foot apart, so the asymmetry in this park is in the lines and the wall, not in the gaps.

The listed capacity is also worth treating with care. Capacity figures for a park of this age depend on how the standing room and special sections are counted, and the club has changed seating over the years. Use 37,755 as the site's reference number and expect the announced figure on any given day to differ.

The Green Monster and the left-field problem

The left-field wall, known as the Green Monster, is about 37 feet high. At 310 feet down the line, it is very close to home plate, so a ball that would be an easy out in a park with a normal fence becomes a double off the wall, or a home run if it clears the top. A high fly ball to left that would die at the warning track elsewhere can smack against the wall at full height.

This does three things to the game. First, it pulls right-handed hitters toward the wall. A pull hitter with average power gains more at Fenway than at almost any other park, because a ball hit hard in the air to left is very likely to hit the wall or clear it. Second, it makes the left fielder a specialist. Playing the carom off a wall that is not a flat plane is a skill, and clubs have often placed an outfielder there for his hands more than his speed. Third, it rewards doubles. A long fly ball that hits the wall counts as a hit, not an out, and a runner can move up two bases.

Some structural details are worth knowing. The scoreboard built into the wall is operated by hand, which is unusual among major-league parks. In 2003 seats were added on top of the wall, and a visitor who sits there is looking down at the left fielder. The Citgo sign beyond the park, visible from many seats, is a fixture of the skyline and has appeared in photographs of the park for decades. None of that changes the game, but it gives left field a character that no flat outfield wall has.

Right field, the triangle and the Pesky Pole

The right-field line is the shortest distance in the park, at 302 feet. The foul pole there is known as the Pesky Pole, named for Johnny Pesky, who played shortstop and third base for the club and finished with a .313 career average in the historical club-leader table for batters with 3,000 at-bats. A hitter who lofts a ball down the line only needs to get it over a fairly modest wall to score a home run, so left-handed hitters with a short swing have often found Fenway kind.

Farther out, the bullpens sit in right field. Center field has a deep corner often called the triangle, where the wall angles back toward the 390-foot center-field mark in the site's reference data. A ball that goes to the triangle and rolls can mean a triple, because the outfielder has a long chase.

In the bleachers, a single red seat marks the spot where a long home run by Ted Williams landed in 1946, measured at 502 feet. It is a reminder that the right-field bleachers are not close to the infield at every angle. The shortest part of the park is the part right along the line, and that is the part that decides most games.

What the park factors say

Historical publishes a batters' park factor for each club-season, where 100 means a neutral park and higher numbers favor hitters. These figures blend the club's home and road games over several seasons and say nothing about the individual players, but the long record is revealing. Here are selected seasons for the Red Sox.

Two points stand out. First, Fenway has been a hitter-friendly park in almost every season since the move, with factors between 101 and 110 in the seasons shown. Second, the range is wide: 101 in 1986 and 2025 against 110 in 1975, which means the park does not play the same every year. Some of that comes from changes to the building, some from the weather, and some from the club building teams that lean on the park, as the 2003 and 2004 Red Sox did when they hit 371 and 373 doubles as a team, counting home and road games.

The numbers also say what a park factor cannot. A factor of 106 does not mean every batter hits six percent better at Fenway. It means that runs scored in Red Sox games ran about six percent above the league norm over the period measured. The extra scoring comes from both teams, and a strong Red Sox pitching staff can pull the factor down, because the measure counts runs by both teams in Boston games.

Orientation, wind and the weather in Boston

The reference file lists the park's azimuth as 45 degrees. Azimuth here is the compass direction from home plate to center field, measured clockwise from north, so 45 degrees means the field points northeast. The rulebook recommends that a field be laid out with the line from home plate through the pitcher's rubber to second base running east-northeast, which would be about 67 degrees. Fenway sits about 22 degrees away from that recommendation because the lot, the surrounding streets and the original design dictated it.

Orientation matters for two reasons. It decides where the sun sits in the afternoon, and it affects how the wind blows relative to the outfield. A wind blowing from home plate to center field helps fly balls travel, a wind from the outfield toward home plate holds them up, and a crosswind pushes balls toward one line or the other. In a park where the left-field wall is so close, a wind carrying fly balls to the left side can turn routine outs into home runs. Anyone who studies totals in baseball betting, a subject on the baseball betting topic page, learns to look at the wind first.

Elevation is another number in the file: 21 feet above sea level, effectively sea level, so no thin-air boost like Denver's. Boston in April can be cold, and cold air is denser than warm air, so a ball does not carry as far on a chilly day. That is one reason the same park can look like a hitter's park in July and a pitcher's park in April.

Players built for the building

Fenway has a long list of players who thrived in it, and the club's career leaders tell the story. Carl Yastrzemski holds the franchise record for hits with 3,419, and also leads in RBI (1,844) and runs (1,816). Ted Williams is the career leader in home runs with 521 and in walks with 2,021, and his .344 average is the best for any Red Sox hitter with at least 3,000 at-bats. Wade Boggs hit .338 for the club, second on that list, and David Ortiz hit 483 home runs in a Boston uniform.

These records came in a park that suited left-handed power and gap hitting. Williams and Ortiz both batted left-handed and hit with great discipline, and the right-field line was never far away. Yastrzemski, who also batted left-handed, collected his 3,419 hits over 23 seasons with the club, more than any other player in its history. A ranking of the best players in Red Sox history by position shows how deep the lineup of Boston hitters has been.

Pitching, too, has had a different shape. Roger Clemens, with 192 wins and 2,590 strikeouts, and Pedro Martinez, with a 2.52 earned run average in 1,000-plus innings with the club, built their careers in a park that punished mistakes. Fenway has always favored pitchers who can keep the ball down and miss bats, because a lazy fly ball can become a double.

There is a caution here. The database does not split home and road performance by player, so a statement like "Ortiz hit better at Fenway" cannot be tested with the fields on hand. What the totals show is that the club has produced a long line of hitters who suited the park, and that is not the same as proof that the park made them.

Seeing a game at Fenway

The park is small and old, and that shapes the visit. Some seats sit behind support posts or under overhangs, and a few have a limited view of parts of the field. Check the seating chart before you buy, and read the description of any seat marked as obstructed. Because the building is tight, the concourse can be crowded, and arriving early is a good habit for the first visit.

Weather changes a day at the park more than at any dome. Wear layers in spring and fall, because temperatures drop quickly after sunset, and carry a light rain jacket in summer. If the forecast is uncertain, check the club's page for postponement notices before you travel, and keep the rules for official games in mind: a game that is stopped by rain becomes official after a certain number of innings, which the rules and umpiring topic page explains.

For the club's current record and next game, use the Boston Red Sox team page and the Fenway Park page. The historical record shows the club's best season attendance at 3,062,699, recorded in 2009.

Common questions

When did Fenway Park open? The historical record lists the park as the club's home beginning with the 1912 season. That makes it the oldest ballpark in the major leagues as of the 2025 season. Check the club's official site for the exact date and any anniversary notes.

How tall is the Green Monster? About 37 feet, which is high for an outfield wall. The site's reference data gives the distance down the left-field line as 310 feet, so the wall is both close and tall.

Is Fenway a hitter's park? By the batters' park factors in the historical record it has been in almost every season since 1912, with factors from 101 to 110 in the seasons shown above. It rewards doubles more than a typical park does, and it rewards hitters who can aim at the short lines.

Where did the Red Sox play before Fenway? At the Huntington Avenue Grounds from 1901 through 1911. The club won the first modern World Series there in 1903.

How many fans does Fenway hold? The site lists 37,755 as the capacity. The announced figure can differ with seating changes and standing room, so use the club's current numbers when planning a trip.

Where to go next

For the franchise story that surrounds the park, read the history of the Boston Red Sox, then look at how the rivalry with the New York Yankees shaped the American League East, or how the division changed with the Baltimore Orioles and the Tampa Bay Rays. For the larger October picture, see the history of the World Series. Park pages with current dimensions and data live at the Fenway Park page.