The 1972 World Series matched the American League champion Oakland A's against the National League champion Cincinnati Reds, with the A's winning in seven games. These two teams would meet again in the fall classic 18 years later. Their managers would meet again in the fall classic 12 years later, this time on different teams.

The A's won the American League West division by 5 ¹⁄₂ games over the Chicago White Sox then defeated the Detroit Tigers, three games to two, in the American League Championship Series. The Cincinnati Reds won the National League West division by 10 ¹⁄₂ games over both the Los Angeles Dodgers and the Houston Astros, then defeated the Pittsburgh Pirates, three games to two, in the National League Championship Series, marking the first year in which an LCS series in either league went the full five games since divisional play was introduced in 1969. The Reds, who won one fewer game than the Pirates during the regular season, became the first team in MLB history to reach the World Series without having the best record in its league. In each of the first six League Championship Series, the team with the better record advanced to the World Series.

The World Series is the annual championship series of Major League Baseball (MLB), played between the American League and National League champions since 1903. The winner of the World Series championship is determined through a best-of-seven playoff and awarded the Commissioner's Trophy. As the series is played in October, Major League Baseball also refers to it as the "Fall Classic". The most recent World Series was won by the St. Louis Cardinals, who defeated the Texas Rangers in 7 games in 2011.

The New York Yankees of the American League have played in 40 World Series and won 27, and the Oakland/Philadelphia Athletics have played in 14 and won 9. In the National League, the St. Louis Cardinals have played in 18 and won 11, while the San Francisco/New York Giants and Los Angeles/Brooklyn Dodgers have both appeared in 18 and won 6.

Until the formation of the American Association in 1882 as a second major league, the National Association of Professional Base Ball Players (1871–75) and then the National League (founded 1876) represented the top level of organized baseball in the United States. All championships went to whoever had the best record at the end of the season, without a postseason series being played. Starting in 1884 and going through 1890, the National League and the American Association faced each other in a series of games at the end of the season to determine an overall champion. These matchups were disorganized in comparison to the modern Series: games played ranged from as few as three in 1884 (Providence defeated New York 3 games to zero), to a high of 15 in 1887 (Detroit beat St. Louis 10 games to 5), and both the 1885 and 1890 Series ended in ties, each team having won three games with one tie game.

Boris Vasilievich Spassky (also Spasskij; Бори́с Васи́льевич Спа́сский; born January 30, 1937) is a Soviet-French chess grandmaster. He was the tenth World Chess Champion, holding the title from 1969 to 1972. He is known as one of the greatest living chess players, and is the oldest living world champion.

Spassky won the Soviet Chess Championship twice outright (1961, 1973), and twice lost in playoffs (1956, 1963), after tying for first place during the event proper. He was a World Chess Championship candidate on seven occasions (1956, 1965, 1968, 1974, 1977, 1980, and 1985).

Spassky defeated Tigran Petrosian in 1969 to become World Champion, then lost the title in the Fischer–Spassky match in 1972 - one of the most famous chess matches in history.

He was born in Leningrad (now Saint Petersburg) to a Russian mother and father, and learned to play chess at the age of five on a train evacuating from Leningrad during World War II. He first drew wide attention in 1947 at age ten, when he defeated Soviet champion Mikhail Botvinnik in a simultaneous exhibition in Leningrad. His early coach was Vladimir Zak, a respected master and trainer. During his youth, from the age of ten, Spassky often worked on chess for several hours a day with master-level coaches. He set records as the youngest Soviet player to achieve first category rank (age ten), candidate master rank (age eleven), and Soviet Master rank (age fifteen). In 1952, at fifteen, Spassky scored 50 percent in the Soviet Championship semifinal at Riga, and placed second in the Leningrad Championship that same year, being highly praised by Botvinnik.

Robert James "Bobby" Fischer (March 9, 1943 – January 17, 2008) was an American chess Grandmaster and the 11th World Chess Champion. He is widely considered one of the greatest chess players of all time. Fischer was also a best-selling chess author. After ending his competitive career, he proposed a new variant of chess and a modified chess timing system. His idea of adding a time increment after each move is now standard, and his variant Chess960 is gaining in popularity.

A chess prodigy, at age 13 Fischer won a "brilliancy" that became known as The Game of the Century. Starting at age 14, he played in eight United States Championships, winning each by at least a point. At age 15½, he became both the youngest grandmaster and the youngest candidate for the World Championship up to that time. He won the 1963–64 U.S. Championship 11–0, the only perfect score in the history of the tournament. In the early 1970s he became one of the most dominant players in modern history—winning the 1970 Interzonal by a record 3½-point margin and winning 20 consecutive games, including two unprecedented 6–0 sweeps in the Candidates Matches. According to research by Jeff Sonas, in 1971 Fischer had separated himself from the rest of the world by a larger margin of playing skill than any player since the 1870s. He became the first official World Chess Federation (FIDE) number-one rated chess player in July 1971, and his 54 total months at number one is the third longest of all time.

Lerrin Harris LaGrow (born July 8, 1948) is a former Major League Baseball pitcher who played 10 seasons in the major leagues with the Detroit Tigers (1970, 1972–1975), St. Louis Cardinals (1976), Chicago White Sox (1977–1979), Los Angeles Dodgers (1979), and Philadelphia Phillies (1980).

Born in Phoenix, Arizona, LaGrow attended Arizona State University in 1968 and 1969 before beginning his professional baseball career.[1] He was the Southern League's Player of the Year in 1970. The Tigers brought him up in July 1970, and he had a 7.30 earned run average in 10 relief appearances. After spending the 1971 season back in the minor leagues, LaGrow rejoined the Tigers in 1972 and 1973, appearing in 37 games, 34 of which were in relief.

In 1972, LaGrow had a 1.32 earned run average (Adjusted ERA+ of 240) in 16 games. He also pitched 1 scoreless inning in Game 2 of the 1972 American League Championship Series against the Oakland Athletics. LaGrow's single inning led to one of the most memorable moments of the 1972 ALCS. In the bottom of the 7th inning, Bert Campaneris came to bat, having had 3 hits, 2 runs scored, and 2 stolen bases in his first 3 at bats in the game. LaGrow's first pitch hit Campaneris in the ankle. Campaneris staggered for a moment, glared at LaGrow and then flung his bat toward LaGrow. The bat spiraled at LaGrow five feet off the ground, but LaGrow ducked, and the bat narrowly missed LaGrow, landing a few feet behind the mound. A bench-clearing brawl ensued, and Tigers manager Billy Martin had to be restrained by umpires and teammates to prevent him from going after Campaneris. Both LaGrow and Campaneries were suspended for the rest of the ALCS. [2] [3]