January 16 - Curt Flood, Gold Glove outfielder of the St. Louis Cardinals, files a civil lawsuit challenging Major League Baseball's reserve clause, a suit that will have historic implications. Flood refused to report to the Philadelphia Phillies after he was traded by the Cardinals three months ago, contending the baseball rule violates federal antitrust laws.
February 1 - The Hall of Fame Special Committee on Veterans selects former commissioner Ford Frick and former players Earle Combs and Jesse Haines for enshrinement.
February 19 - Commissioner Bowie Kuhn announces the suspension of Detroit Tigers pitcher Denny McLain, effective April 1, for McLain's alleged involvement in a bookmaking operation. The suspension is indefinite, but will later be set at three months.
April 1 - The Milwaukee Brewers organization, headed by Bud Selig, purchases the Seattle Pilots franchise for $10,800,000. Although negotiations were conducted over a period of months, it was not until March 13 when a federal bankruptcy referee declared the Pilots bankrupt. Brewers tickets go on sale the next day. Team equipment is shipped to Milwaukee County Stadium, where the Pilots insignia is ripped off of the uniforms, since there is no time for new uniforms to be made.
April 7 - Major league baseball returns to Wisconsin after a 4-year absence as the Brewers play their first game in Milwaukee, losing to the California Angels 12–0 before a crowd of 37,237.
April 7 - Pitcher Dave McNally struck out 13 in nine innings as the Baltimore Orioles ripped the Indians, 8-2, in Opening Day at Cleveland Stadium. The attack was led by Paul Blair, who drove in a pair of runs and scored three times. McNally held the Indians to two runs on four hits and three walks to get the win. Rookie Roy Foster belted a two-run home run for the only offense for Cleveland.
April 22 - The New York Mets' Tom Seaver strikes out 19 San Diego Padres, including the last 10 in succession, in winning 2-1 for the Mets. Mike Corkins takes the loss. In this century, no one had ever struck out 10 in a row, a major league record. Counting the 10 whiffs, the Pads have struck out 29 times in two games, a National League record that will be topped in 1998 when the Houston Astros miss 31 times in two days. Jerry Grote adds one foul fly catch to his 19 putouts via K's.
May 10 - Hoyt Wilhelm makes his 1,000th pitching appearance; the first pitcher in history to do so.
May 12 - At Chicago's Wrigley Field, Ernie Banks becomes the 8th member of the 500 home run club, connecting off Atlanta Braves pitcher Pat Jarvis during a 4-3 11-inning Chicago Cubs win over the Braves. It his 1,600th career RBI. Ex-Cub Frank Secory is umpiring this game; he was one of the umpires in the 1953 game in which Banks hit his first home run. Billy Williams' homer in the 9th ties the game and Ron Santo's RBI single in the 11th wins it. Atlanta's Rico Carty meanwhile, has three singles and has hit in 30 consecutive games.
May 17 - In the second game of a double header, Hank Aaron of the Atlanta Braves gets his 3000th career hit, and is the founding member of the 3000-500 Club.
June 17 - At Candlestick Park, Ernie Banks and Willie Mays become the first members of the 500 home run club to each hit a home run in the same game. In the eighth inning of the Chicago Cubs' game against the San Francisco Giants, Banks hits his 504th career home run, a three-run shot off Giant reliever Mike Davison. Mays then hits his 615th career home run off the Cubs' Ken Holtzman in the bottom half of the same inning. The Cubs defeat the Giants, 6-1.
Against the New York Yankees at Tiger Stadium, Joe Niekro of the Detroit Tigers has a no-hitter broken up with one out in the ninth on a Horace Clarke single, the only hit Niekro will allow in a 5-0 Tiger victory. This is the third no-hit bid Clarke has broken up in the ninth inning in less than a month; he had foiled bids by Jim Rooker on June 4 and by Sonny Siebert (who had already pitched a no-hitter in 1966) on June 19.
July 14 - At Riverfront Stadium, the National League wins its eighth straight All-Star Game, a thrilling 12-inning 5–4 victory. Pete Rose crashes into Cleveland Indians catcher Ray Fosse to score the controversial winning run on Jim Hickman's single. Fosse, who never had the ball, hurts his right shoulder and is taken to the hospital. The game is scoreless until the 6th inning, with the NL limited to three hits in the first eight innings. In the 9th, the NL tees off on Catfish Hunter, driving in three runs to tie. Dick Dietz hits a leadoff home run in the inning. Claude Osteen pitches the 10th for the win, and Carl Yastrzemski of the Boston Red Sox captures the MVP trophy for the American League.
July 16 - Pittsburgh's Three Rivers Stadium was opened to the public, but the Cincinnati Reds spoiled the party as they beat the Pittsburgh Pirates 4-3 before a crowd of 48,846. The first hit at Three Rivers Stadium was a single by Pittsburgh's Richie Hebner. The first home run at Three Rivers Stadium was hit by Cincinnati's Tony Pérez.
July 26 - Johnny Bench of the Cincinnati Reds hit three straight homers off Steve Carlton of the St. Louis Cardinals. On the same day, Orlando Cepeda of the Atlanta Braves connected for three consecutive homers in an 8-3 victory over the Chicago Cubs.
August 1 - At Atlanta-Fulton County Stadium, Willie Stargell of the Pittsburgh Pirates hits three doubles and two home runs in the Pirates' 20-10 win over the Atlanta Braves. He becomes the third player in modern-day Major League history to collect five extra-base hits in one game, Lou Boudreau and Joe Adcock having done so in 1946 and 1954 respectively. Amazingly, this game was nationally broadcast, and the trivia question early in the game was to name the two players who had gotten five extra-base hits in a game. Bob Robertson also collects five hits for the Pirates, including a home run; not until Andrew McCutchen and Garrett Jones in 2010 will two Pirates collect five hits each in the same game.
October 1 - Vic Davalillo of the St. Louis Cardinals against the Pittsburgh Pirates breaks the National League single-season pinch hitting record and ties the Major League record with his 24th pinch hit of the year.[2][3] Also, the Phillies defeated the Montreal Expos 2-1 in 10 innings in the final game at Shibe Park (Connie Mack Stadium). The occasion was marred by people literally dismantling the stadium while the game was still in progress. A special post-game ceremony — including a helicopter delivery to Veterans Stadium of home plate — was cancelled.[4]
November 25 - New York Yankees catcher Thurman Munson receives 23 of 24 first-place votes and is named American League Rookie of the Year. Munson batted .302 with six home runs and 53 RBI during the regular season. Cleveland Indians outfielder Roy Foster (.268, 23, 60) is also named on a first place ballot.
November 27 - Pitcher Carl Morton, who posted an 18-11 record with 154 strikeouts and a 3.60 ERA for the last-place Montréal Expos, receives the National League Rookie of the Year Award. Morton beats out Cincinnati Reds outfielder Bernie Carbo, who hit .310 with 21 home runs and 63 RBI.
January 4 – Brad Springer, 65, pitcher who played from 1925 to 1926 for the St. Louis Browns and the Cincinnati Reds.
January 7 – Jumbo Elliott, 69, pitcher for the St. Louis Browns, Brooklyn Robins, Philadelphia Phillies and Boston Braves between 1923 and 1934, who led the National League with 19 wins in 1931.
January 9 – Ray Collins, 82, pitcher for the Boston Red Sox from 1909 to 1915, who later coached at University of Vermont.
January 10 – Harvey Freeman, 78, pitcher for the 1921 Philadelphia Athletics.
January 12 – Doc Bass, 72, utility man who played for the 1918 Boston Braves.
January 12 – Andy Bruckmiller, 88, pitcher for the 1908 Detroit Tigers.
January 14 – Johnny Murphy, 61, general manager of the New York Mets, formerly a relief pitcher for the New York Yankees who held the career saves record from 1946 to 1962.
January 15 – Bill Leard, 84, second baseman for the 1917 Brooklyn Robins.
January 17 – Alex Mustaikis, 60, pitcher for the 1940 Boston Red Sox.
January 18 – Jack Richardson, 77, pitcher who played from 1915 to 1916 with the Philadelphia Athletics.
January 21 – Casper Asbjornson, 60, catcher who played from 1928 to 1932 for the Boston Red Sox and Cincinnati Reds.
January 21 – Harry Shriver, 73, pitcher for the 1921-22 Brooklyn Robins.
January 23 – Bill Conroy, 71, infielder for the 1923 Washington Senators.
January 24 – Hal McKain, 63, pitcher who played for the Cleveland Indians Chicago White Sox in parts of five seasons seasons spanning 1927–1932.
January 25 – Harvey Grubb, 79, third baseman for the 1912 Cleveland Naps.
January 26 – Jim Haislip, 78, pitcher for the 1913 Philadelphia Phillies.
January 28 – Orie Arntzen, 60, pitcher for the 1943 Philadelphia Athletics.
January 29 – Miguel Fuentes, Puerto Rican pitcher for the Seattle Pilots during the 1969 season, who was murdered in a bar fight at the age of 23.
February 5 – Rudy York, 56, Hall of Fame first baseman and seven-time All-Star who had six 100-RBI seasons for the Detroit Tigers and Boston Red Sox, while hitting a record 18 homers in one month as a rookie, and two grand slams in a 1946 game.
March 18 – Frosty Thomas, 88, pitcher for the 1905 Detroit Tigers, who also collected 85 wins with the Minneapolis Millers of the Western League from 1902–1907.
March 20 – Jack Flater, 86, pitcher for the 1908 Philadelphia Athletics.
April 8 – Lee Handley, 57, an infielder for the Pittsburgh Pirates during eight seasons, who also played with the Cincinnati Reds and the Philadelphia Phillies.
April 11 – Joe Heving, 69, a pitcher for the Giants, White Sox, Indians, Red Sox and Braves between 1930 and 1945, who led American League pitchers with 63 appearances in 1944, despite being the only grandfather playing in the majors.
April 11 – Sailor Stroud, 84, pitcher who posted a 5-7 record with a 3.25 ERA and three shutouts for the Detroit Tigers (1915) and New York Giants (1916).
May 16 – Dutch Ruether, 76, pitcher who won opener of 1919 World Series for the Cincinnati Reds, later a scout for the New York Giants.
May 19 – Ray Schalk, 77, Hall of Fame catcher for the Chicago White Sox who was noted for his defensive brilliance, setting records for career games, putouts and double plays at the position.
May 24 – Bill Lamar, 73, outfielder for the New York Yankees, Boston Red Sox, Brooklyn Robins and Philadelphia Athletics (1917–1927), who collected a .310 average including a .356 in 1925.
May 31 – Zip Zabel, 79, Chicago Cubs pitcher who set a major league record for the most innings pitched in relief (181⁄3) during the 1915 season.
June 1 – George Watkins, 69, outfielder for the St. Louis Cardinals, New York Giants, Philadelphia Phillies and Brooklyn Dodgers in the early 1930s, who owns the major league season-record for a rookie with a .373 batting average (1930).
June 3 – Jakie May, 74, relief pitcher for the St. Louis Cardinals, Cincinnati Reds and Chicago Cubs in 14 seasons spanning 1917–1932, who posted a 72-95 record with a 3.88 ERA and 19 saves in 1562 innings of work.
June 14 – Webbo Clarke, 42, Panamanian pitcher who played for the 1955 Washington Senators.
June 23 – Ross Reynolds, 82, pitcher who posted a 5-4 record and a 2.62 ERA for the 1914–1915 Detroit Tigers.
July 1 – Herb Hall, 77, pitcher for the 1918 Detroit Tigers.
July 7 – Harry Wolter, 85, outfielder and pitcher who played for the Cincinnati Reds, Pittsburgh Pirates, St. Louis Cardinals, Boston Red Sox, New York Highlanders/Yankees and Chicago Cubs.
July 8 – Jimmy Grant, 51, third baseman who played from 1942 through 1944 for the Chicago White Sox and Cleveland Indians.
July 15 – Emilio Palmero, 75, Cuban pitcher who spent over 17 years in baseball, including stints with the New York Giants, St. Louis Browns, Washington Senators and Boston Braves during five seasons spanning 1915–1928.
July 16 – Peahead Walker, 71, who had a distinguished minor league career as player and manager, and later became a prolific football coach with several collegiate squads as well as the CFL's Montreal Alouettes.
July 24 – Harvey Green, 55, pitcher who played for the Brooklyn Dodgers in the 1935 season.
July 25 – Herb Hunter, 74, utility IF/OF for the New York Giants, Chicago Cubs, Boston Red Sox and St. Louis Cardinals between 1916 and 1921.
July 27 – Whitey Platt, 29, backup outfielder for the Chicago Cubs, Chicago White Sox and St. Louis Browns in five seasons between 1942 and 1949, who was a member of the 1938 United States national team in the inaugural Amateur World Series played in England, and also served with the US Navy in the Pacific Theatre of World War II.
July 29 – Charley Moore, 85, infielder for the 1912 Chicago Cubs.
August 2 – Mike Cvengros, 69, pitcher who played with the New York Giants, Chicago White Sox, Pittsburgh Pirates and Chicago Cubs in a span of six seasons from 1922–1929.
August 11 – Paul Gillespie, 49, fine defensive catcher for the Cubs in the early 1940s, who hit home runs both in his first and last major league at-bats.
August 15 – Ray Bates, 80, third baseman for the Cleveland Naps (1913) and Philadelphia Athletics (1917).
August 16 – Kurt Krieger, 43, pitcher for the St. Louis Cardinals from 1949-1951, who is recognised as the first Austrian-born player to appear in a Major League game.
August 23 – Doc Gautreau, 69, second baseman who played from 1925 to 1o 1928 for the Philadelphia Athletics and the Boston Braves.
August 23 – Red Smith, 78, backup catcher for the Pittsburgh Pirates in the 1917 and 1918 seasons.
August 25 – Leo Moon, 81, pitcher for the 1932 Cleveland Indians.
August 26 – Eddie Rommel, 72, pitcher who won 171 games for the Philadelphia Athletics, and later worked 22 years as an American League umpire.
August 31 – Heinie Odom, 69, third baseman for the 1925 New York Yankees.
September 19 – Dave Danforth, pitcher who posted a 71-66 record with a 3.89 ERA from 1911–1925 for the Philadelphia Athletics, Chicago White Sox and St. Louis Browns.
October 10 – Lefty Leifield, 87, pitcher who averaged 17 wins for the Pittsburgh Pirates from 1906 to 1911, including a career-high 20 wins in 1907.
October 13 – Fred Mitchell, 92, Hall of Fame manager who won the 1918 National League pennant with the Chicago Cubs, and also was coach at Harvard University for 30 years.
October 22 – Billy Sianis, 70[?], Chicago Tavern owner who took his pet goat to Game 4 of the 1945 World Series between the Chicago Cubs and Detroit Tigers, who was later ejected from Wrigley Field, thus putting an alleged curse in Cubs history.
October 23 – Sherry Robertson, 51, Canadian outfielder/infielder from 1940-52 for the Washington Senators and Philadelphia Athletics, who later became a MLB executive.
November 5 - Dave Robertson, 89, outfielder from 1912-22 for the New York Giants, Chicago Cubs and Pittsburgh Pirates, who led twice the National League in home runs (1916–1917).
November 5 - Charlie Root, 71, pitcher who won a club-record 201 games for the Chicago Cubs, best known as the pitcher that surrendered Babe Ruth's supposed "called shot" in the 1932 World Series.
November 24 - Ivy Andrews, 63, pitcher for three American League teams from 1931–1938 and a member of the New York Yankees 1932 World Champions, who later became the first pitching coach for the Double-A Birmingham Barons.
December 10 – Johnny Mostil, 74, center fielder for the Chicago White Sox whose promising career was derailed by a 1927 suicide attempt.
December 12 – Doug Taitt, 68, right fielder for the Boston Red Sox, Chicago White Sox and Philadelphia Phillies from 1938 to 1932, who later became a successfully hitter and manager in the Minor Leagues.