The following are the baseball events of the year 1987 throughout the world.
Major league baseball final standings
- February 25 – Baseball Commissioner Peter Ueberroth suspends San Diego Padres pitcher LaMarr Hoyt from baseball following his third arrest on drug possession charges, this time on the U.S.-Mexico border. Hoyt is sentenced to 45 days in jail on December 16, 1986. An arbitrator cuts Hoyt's suspension to sixty days in mid-June and orders the Padres to reinstate him. The Padres, however, give him his unconditional release the following day.
- April 6 – Al Campanis, a former teammate of Jackie Robinson, appears on the ABC news program, Nightline to discuss the progress of racial integration of baseball on the fortieth anniversary of Robinson's first game. When asked why more African-Americans do not become managers or executives, Campanis states that Blacks lack certain qualities for those jobs, drawing the ire of host Ted Koppel. Campanis is fired as Los Angeles Dodgers general manager two days later.
- April 13 – At Jack Murphy Stadium, the San Diego Padres set a major league record when the first three batters in the bottom of the first inning hit home runs off San Francisco Giants starter Roger Mason in their home opener. The Padres, trailing 2–0, got homers from Marvell Wynne, Tony Gwynn and John Kruk.
- April 15 – Juan Nieves of the Milwaukee Brewers pitches a no-hitter against the Baltimore Orioles. Nieves becomes the second-youngest pitcher in major league history to accomplish the feat (22 years, 4 months, 10 days), as well as the first Brewer to do it.
- April 17 – Mike Schmidt of the Philadelphia Phillies hits the 500th home run of his career. It comes in the ninth inning against the Pittsburgh Pirates' Don Robinson, giving the Phillies an 8–6 win at Pittsburgh.
- June 1 – Knuckleballer Phil Niekro of the Cleveland Indians beats the Detroit Tigers, 9–6. This is his 314th major league victory for Niekro, which paired him with brother Joe a current total of 216 wins, making them the winningest pitching brother duo, surpassing the 529 wins posted by Gaylord Perry and Jim Perry. The Niekros will finish their careers with a combined 539 wins.
- June 2 – The Seattle Mariners use the number-one overall pick of the 1987 MLB draft to select Ken Griffey, Jr., signaling a turnaround in their fortunes as an organization.
- June 17 - Former Kansas City Royals manager Dick Howser dies of brain cancer at age 51. Howser had attempted to manage the team at the start of spring training, but found he was physically too weak and was replaced by Billy Gardner.
- June 22 – With their starting rotation decimated by injuries, the New York Mets seek help from Tom Seaver, who is not offered a contract to his liking following the 1986 season, whose salary was $1 million. Then the Boston Red Sox offer him $500,000, which Seaver also declines. Though no actual contract is signed, Seaver joins the Red Sox on June 6, and is hit hard on during an exhibition game against the Triple-A Tidewater Tides on June 11. After similarly poor outings on the 16th & 20th, he announces his retirement.
- June 28 – Don Baylor of the visiting Boston Red Sox is hit by a pitch from Rick Rhoden in the sixth inning of a 6–2 win over the New York Yankees. The HBP gives Baylor 244 for his career, breaking a modern-day record set by Ron Hunt.
- July 14 – Tim Raines caps a 3-for-3 performance in the All-Star Game with a two-run triple in the top of the 13th inning, giving the National League a 2–0 victory over the American League. Raines is selected the MVP.
- July 18 – New York Yankees first baseman Don Mattingly homers in his record-tying eighth straight game, in a 7-2 Texas Rangers win over the Yankees. He ties the record set by Dale Long in 1956.
- September 9 – Nolan Ryan strikes out 16 to pass 4,500 for his career as the Houston Astros beat the San Francisco Giants 4-2. Ryan strikes out 12 of the final 13 batters and fans Mike Aldrete to complete the seventh inning for his 4,500th strikeout.
- September 14 – In the midst of the Toronto Blue Jays' 18-3 drubbing of the Baltimore Orioles at Exhibition Stadium, Cal Ripken, Jr. is lifted from the lineup and replaced by Ron Washington, stopping Ripken's consecutive innings played streak at 8,243. In this same game, Toronto hits ten home runs to set a Major League single-game record. Ernie Whitt connects on three of the home runs, Rance Mulliniks and George Bell two each, and Fred McGriff, Lloyd Moseby and Rob Ducey one each.
- September 18 – Darrell Evans hits his 30th home run of the season, and becomes the first player to do so after the age of 40.
- September 21 – Darryl Strawberry steals his 30th base of the season to join the 30–30 club. With teammate Howard Johnson already having joined, it marks the first time that two teammates achieve 30-30 seasons in the same year.
- September 22 – Wade Boggs of the Boston Red Sox reaches the 200-hit mark for the fifth straight season in an 8-5 loss to the Detroit Tigers.
- September 27 - Four days after being signed as a free agent and almost a month after being released by the Toronto Blue Jays, 48-year-old Hall of Famer Phil Niekro pitches in his final major league game for the Atlanta Braves. Niekro starts the game against the San Francisco Giants, pitches three innings, and gives up six hits and five runs.
- January 1 – Velma Abbott, 57, Canadian infielder who played from 1946 to 1947 in the All-American Girls Professional Baseball League.
- January 1 – Norene Arnold, 59, All-American Girls Professional Baseball League pitcher and infielder.
- January 5 – Dale Mitchell, 65, All-Star left fielder and career .312 hitter who spent almost his entire career with the Indians; made the last out in Don Larsen's perfect game in the 1956 World Series, but had only one more major league at bat.
- January 6 – Margaret Danhauser, 65, outstanding first sacker for the Racine Belles of the All-American Girls Professional Baseball League from 1943 through 1950.
- January 17 – Ed Busch, 69, shortstop who played from 1943 to 1945 for the Philadelphia Athletics.
- January 19 – George Selkirk, 79, All-Star outfielder who helped lead the New York Yankees to 5 World Series titles.
- January 20 – Hank Behrman, 65, pitcher for the Brooklyn Dodgers and New York Giants between 1946 and 1949.
- February 2 – Olive Little, 69, Canadian All-Star female pitcher who threw four no-hitters in the All-American Girls Professional Baseball League.
- February 9 – Larry French, 79, All-Star pitcher who won 197 games, primarily with the Pirates and Cubs, before beginning a 26-year Naval career in 1943.
- March 9 – Zeke Bonura, 78, first baseman for the White Sox, Senators, Giants and Cubs, who hit .300 or more in four of his seven major league seasons with a career-high .345 in 1937.
- March 11 – Fred Lucas, 84, outfielder who hit a .265 average in 20 games for the 1935 Philadelphia Phillies.
- March 16 – Bob Kline, 77, pitcher for the Boston Red Sox, Philadelphia Athletics and Washington Senators in the 1930s, later a minor league manager.
- April 27 – John Burrows, 74, pitcher for the Philadelphia Athletics and Chicago Cubs in the 1940s.
- April 29 - Bud Bates, 75, Outfielder for Philadelphia Phillies in 1939.
- May 1 – Bobo Holloman, 62, pitcher for the 1953 St. Louis Browns, who threw a no-hitter in his first major league start.
- May 7 – Boom-Boom Beck, 82, pitcher who posted a 38-65 record for seven different teams between 1924 and 1945.
- May 14 – Luke Sewell, 86, All-Star catcher for four AL teams who managed the St. Louis Browns to their only pennant in 1944.
- May 31 – Jerry Adair, 50, middle infielder for four AL teams, mainly the Orioles, who set various records for error-free play.
- June 13 – Huck Betts, 90, pitcher who had a 61-68 record with the Philadelphia Phillies (1920–25) and Boston Braves (1932–35).
- June 15 – George Smith, 49, Negro League second baseman who played from 1963 to 1966 for the Detroit Tigers and Boston Red Sox.
- June 17 – Dick Howser, 51, manager, formerly an All-Star shortstop, who led the Kansas City Royals to their first World Series championship in 1985.
- June 21 – Phil Weintraub, 79, first baseman who once drove in 11 runs in one game while playing for the New York Giants.
- July 22 – Don McMahon, 57, All-Star relief pitcher for seven teams who led NL in saves in 1959, retired with the third most relief appearances in history.
- July 27 – Travis Jackson, 83, Hall of Fame shortstop for the New York Giants who batted .300 six times, led NL shortstops in assists four times and double plays twice; later a minor league manager.
- August 8 – Juan Antonio Yanes, 85, who for more than three decades was one of the leading promoters of Venezuelan baseball both in the amateur and professional fields.
- August 31 – Dick Young, 69, longtime New York sportswriter known for his hard-hitting style.
- September 1 – Pinky Whitney, 82, All-Star third baseman for the Philadelphia Phillies and Boston Braves who had four 100-RBI seasons.
- September 2 – Cam Carreon, 50, catcher for the Orioles, Indians and White Sox from 1959 to 1966.
- October 17 – Pete Cote, 85, utility for the 1926 New York Giants.
- November 16 – Jim Brewer, 50, All-Star relief pitcher for the Los Angeles Dodgers who held the club record for career saves.
- November 17 – Paul Derringer, 81, 6-time All-Star pitcher who had four 20-win seasons for the Cincinnati Reds; earned 2-1 victory in Game 7 of the 1940 World Series.
- November 21 – Dusty Cooke, 80, outfielder for the New York Yankees, Boston Red Sox and Cincinnati Reds during the 1930s, who later coached and managed with the Philadelphia Phillies.
- November 24 – Jim Russell, 69, outfielder for the Pirates, Braves and Dodgers from 1942 to 1951.
- November 27 – Babe Herman, 84, right fielder who batted .324 lifetime, and whose popularity while with the Brooklyn Dodgers was undiminished through a variety of fielding and baserunning lapses; hit for the cycle three times.
- December 24 – Nino Espinosa, 34, pitcher for the Mets, Phillies and Blue Jays from 1974 to 1981.