Babe Ruth in the context of "2011 World Series"

A baseball bat is a smooth wooden or metal club used in the sport of baseball to hit the ball after it is thrown by the pitcher. By regulation it may be no more than 2.61 inches (6.6 cm) in diameter at the thickest part and no more than 42 inches (1.067 m) in length. Although historically bats approaching 3 pounds (1.4 kg) or 48 oz were used, modern bats of 33 ounces (0.94 kg) are common, topping out at 34 to 36 ounces (0.96 to 1.02 kg).

The 1920s (pronounced "nineteen-twenties" often shortened to the "'20s" or the "Twenties") was a decade that began on January 1, 1920, and ended on December 31, 1929. Primarily known for the economic boom that occurred in the Western World following the end of World War I (1914–1918), the decade is frequently referred to as the "Roaring Twenties" or the "Jazz Age" in America and Western Europe, and the "Golden Twenties" in Germany, while French speakers refer to the period as the "Années folles" ('crazy years') to emphasize the decade's social, artistic, and cultural dynamism.

The devastating Wall Street crash in October 1929 is generally viewed as a harbinger of the end of 1920s prosperity in North America and Europe. In the Soviet Union, the New Economic Policy was created by the Bolsheviks in 1921, to be replaced by the first five-year plan in 1928. The 1920s saw the rise of radical political movements, with the Red Army triumphing against White movement forces in the Russian Civil War, and the emergence of far-right political movements in Europe. In 1922, the fascist leader Benito Mussolini seized power in Italy. Other dictators that emerged included Józef Piłsudski in Poland, and Peter and Alexander Karađorđević in Yugoslavia. First-wave feminism made advances, with women gaining the right to vote in the United States (1920), Albania (1920), Ireland (1921), and with suffrage being expanded in Britain to all women over 21 years old (1928).

Willie Lee McCovey (January 10, 1938 – October 31, 2018), nicknamed "Stretch" and "Willie Mac", was an American professional baseball player. He played in Major League Baseball as a first baseman from 1959 to 1980, most notably as a member of the San Francisco Giants for whom he played 19 seasons. McCovey also played for the San Diego Padres and Oakland Athletics in the latter part of his MLB career.

A fearsome left-handed power hitter, at the time of his retirement in 1980, McCovey ranked second only to Babe Ruth in career home runs among left-handed batters and seventh overall. As of 2022, he ranks 20th overall on baseball's all-time home run list, tied with Ted Williams and Frank Thomas. He was a six-time All-Star, three-time home run champion, MVP, and was inducted into the Baseball Hall of Fame in 1986 in his first year of eligibility, only the 16th man so honored, at the time.

The original Yankee Stadium was located in the Bronx in New York City. It was the home of the New York Yankees from 1923 to 2008, except for 1974–1975 when it was renovated. It hosted 6,581 Yankees regular season home games during its 85-year history. It was also the home of the New York Giants of the National Football League (NFL) from October 21, 1956 through September 23, 1973. The stadium's nickname is "The House That Ruth Built" which is derived from Babe Ruth, the baseball superstar whose prime years coincided with the stadium's opening and the beginning of the Yankees' winning history.

The stadium was built from 1922 to 1923 for $2.4 million ($43 million in 2023 dollars). Its construction was paid for entirely by Yankees owner Jacob Ruppert, who was eager to have his own stadium after sharing the Polo Grounds with the New York Giants baseball team the previous ten years. Yankee Stadium opened for the 1923 season and was hailed at the time as a unique facility in the country. Over the course of its history, it became one of the most famous venues in the United States, hosting a variety of events and historic moments during its existence. Many of these moments were baseball-related, including World Series games, no-hitters, perfect games, and historic home runs, but the stadium also hosted boxing matches, the 1958 NFL Championship Game, college football, concerts, and three Papal Masses. Its condition deteriorated in the 1960s and 1970s, prompting its closure for renovation from October 1973 through 1975. The renovation significantly altered the appearance of the venue and reduced the distance of the outfield fences.

The history of baseball can be broken down into various aspects: by era, by locale, by organizational-type, game evolution, as well as by political and cultural influence. The game evolved from older bat-and-ball games already being played in England by the mid-18th century. These games were taken to North America by immigrants, where the modern version developed. By the late 19th century, baseball was widely recognized as the national sport of the United States, and had begun to spread throughout the Pacific Rim and the Americas. Today, baseball is popular in North America and parts of Central and South America, the Caribbean, and East Asia, particularly in Japan, South Korea, and Taiwan.

References to baseball date back to the 1700s when in England it was referenced in 1744 in the children's book A Little Pretty Pocket-Book by John Newberry. The game is also mentioned in the book Northanger Abbey by Jane Austen, published in 1818. In the early 1800s "baseball" and a game first mentioned in 1828 as the aforementioned "rounders" may have been the same or very similar. During the 1830s and 1840s organized amateur club baseball grew up in eastern United States cities; however, the first official baseball game with a documented score card took place not in the US, but in Canada in 1838. While Canada invented the version of baseball we know today, innovations made by New York City clubs became the basis for the modern game, far removed from its English ancestor, but extremely similar to the Canadian version. These clubs formed a national governing body with uniform rules in 1858, the National Association of Base Ball Players. In 1871 the first professional league, the National Association of Professional Base Ball Players, was founded. Five years later, the National League was created; it was followed by the American League in 1901. The first World Series between the champions of the two major leagues was held in 1903, and by 1905 it became an annual event. Baseball early in the 20th century was characterized by low-scoring games, but the dead-ball era ended in the early 1920s with rule changes and the rise of power hitter Babe Ruth. The major leagues had a color barrier that lasted until 1947, when Jackie Robinson made his debut. The major leagues began the process of expansion in 1961 and attendance increased from the mid-1970s to 1994, when a work stoppage led to the cancellation of the World Series.

The 1961 major league baseball season began on April 10, 1961. The regular season ended on October 1, with the Cincinnati Reds and New York Yankees as the regular season champions of the National League and American League, respectively. The postseason began with Game 1 of the 58th World Series on October 4 and ended with Game 5 on October 9. In the second iteration of this World Series matchup, the Yankees defeated the Reds, four games to one, capturing their 19th championship in franchise history, since their previous in 1958. The season is best known for Yankee teammates Roger Maris' and Mickey Mantle's pursuit of Babe Ruth's prestigious 34-year-old single-season home run record of 60. Maris ultimately broke the record when he hit his 61st home run on the final day of the regular season, while Mantle was forced out of the lineup in late September due to a hip infection and finished with 54 home runs. Going into the season, the defending World Series champions were the Pittsburgh Pirates from the 1960 season.

For the third year, there were two separate All-Star Games played. The first, the 30th Major League Baseball All-Star Game, was held on July 11 at Candlestick Park in San Francisco, California, home of the San Francisco Giants. The National League won, 5–4. The second, the 31st Major League Baseball All-Star Game, was held on July 31 at Fenway Park in Boston, Massachusetts, home of the Boston Red Sox. The game ended in a 1–1 tie, due to a rainout following the end of the ninth inning.