May 6 – At International League, Newark Bears outfielder Bob Seeds hits four home runs in four successive innings and drives in 12 runs against the Buffalo Bisons. The next day, Seeds slams three more. His seven homers in the two-day barrage account for 17 runs batted in and 30 total bases. In his first 59 games‚ Seeds will clout 28 HR with 95 RBI.
Babe Ruth signs a contract to coach with the Brooklyn Dodgers. Ruth dons a Dodger uniform the next day, entertains observers with a batting demonstration, and works the third-base coaching box for the remainder of the season.
July 29 - Jake Powell is interviewed by WGN's Bob Elson. When asked about his work as a police office in Dayton Ohio, Powell brags that he "beats n*****s in the head". Commissioner Landis suspends Powell for the comments.
August–September
August 2 – The Brooklyn Dodgers and the St. Louis Cardinals used a yellow baseball in the first game of a doubleheader as an experiment. The two teams went back to the white ball in the second game as the Dodgers swept the doubleheader 6–2 and 9–3.
August 22 – Preacher Roe makes his major league debut for the St. Louis Cardinals. He lasts just 2.2 innings and gives up four earned runs. He doesn't pitch in the major leagues again until 1944 with the Pittsburgh Pirates.
Lou Boudreau makes his major league debut for the Cleveland Indians in an 11–5 loss to the Detroit Tigers.
The Cincinnati Reds sell Jake Mooty and Jimmy Outlaw to the Brooklyn Dodgers. Five days later (September 14), Commissioner Landis voids the deal, making both players eligible for the draft. Outlaw is drafted by the St. Louis Cardinals in the 1938 rule 5 draft on October 5, and traded to the Dodgers for Lew Krausse and cash on December 13. Brooklyn then packages him with Buddy Hassett, and send him to the Boston Bees for Ira Hutchinson and Gene Moore the same day. Mooty isn't drafted until October 3, 1939, by the Chicago Cubs from Syracuse (International).
September 10 – At the Polo Grounds, the New York Giants defeat the Brooklyn Dodgers, 20-2.
September 30 – The Chicago Cubs and St. Louis Cardinals play to a 7–7 tie. The tie breaks the Cubs' ten-game winning streak that sees them go from 3.5 games back of the Pittsburgh Pirates to first place in the National League.
October–December
October 5 – Red Ruffing and the New York Yankees take game one of the 1938 World Series, 3-1, over the Chicago Cubs at Wrigley Field.
October 6 – The Cubs jump out to a 1–0, then 3–2 lead against the Yankees, however, two run home runs by Frankie Crosetti and Joe DiMaggio in the eighth and ninth inning, respectively, give the Yankees the 6–3 victory.
October 8 – With two outs and no one on base, a two out rally in the fifth inning plates two runs, as the New York Yankees take game three of the World Series, 5-2.
October 9 – The New York Yankees defeat the Chicago Cubs, 8–3, in Game four of the World Series to win a record third consecutive World Championship, and seventh overall, four games to none.
December 14 – Major League Baseball teams adopt several resolutions. The National League allows the Cincinnati Reds to play their season opener one day before other teams, as a way of honoring the 100th anniversary of baseball and of the 1869 Red Stockings being the first professional team. In other news, Will Harridge is re-elected as American League president and given a 10-year term. The AL permits the Cleveland Indians and Philadelphia Athletics to play night games. Finally, MLB agree on a standard ball but disagree on increasing rosters from 23 to 25 players. Judge Landis will eventually decide on 25.
January 1 – Frank Sexton, 65, pitcher for the 1895 Boston Beaneaters of the National League.
January 12 – Dupee Shaw, 78, pitcher who played six seasons. Won 30 games and struck out 451 batters in 1884.
January 16 – Earl Clark, 30, backup outfielder who hit .291 in 293 games for the Boston Braves and St. Louis Browns from 1927 to 1934.
January 16 – Joe Sommer, 79, infielder/outfielder between 1880 and 1890, most prominently for the Baltimore Orioles of the American Association.
January 19 – Bill Everitt, 69, infielder who played from 1895 through 1901 for the Chicago Colts/Orphans and the Washington Senators.
January 20 – Herb Goodall, 67, pitcher for the 1890 Louisville Colonels of the American Association.
January 27 – Larry Battam, 61, third baseman for the 1895 New York Giants of the National League.
January 24 – Jim Mutrie, 86, manager who led New York Metropolitans to the American Association title in 1884, then won pennants in 1888–89 after moving to NY's NL franchise – which he renamed by marveling over his "Giants"; career .611 winning percentage was best of 19th century.
January 28 – Bill Hill, 63, pitcher who played from 1896 to 1899 for five different National League clubs.
January 28 – Pop Rising, 56, outfielder for the 1905 Boston Americans.
January 31 – Charlie Chech, 59, pitcher for the Cincinnati Reds, Cleveland Naps and Boston Red Sox between 1905 and 1909.
January 31 – Jim Gray, 75, infielder who played for the Pittsburgh Alleghenys/Burghers/Pirates between 1884 and 1893.
February
February 3 – Mike Donovan, 56, third baseman for the Cleveland Naps in 1904 and the New York Highlanders in 1908.
February 9 – Charlie Daniels, 76, pitcher for the 1884 Boston Reds of the Union Association.
February 16 – Lee Tannehill, 57, infielder for the Chicago White Sox from 1903 to 1912, who is credited as the first player to hit a home run in the original Comiskey Park.
February 21 – George Merritt, 57, outfielder who played from 1903 through 1905 for the Pittsburgh Pirates.
February 22 – Mert Hackett, 78, catcher for five seasons, including the 1883 National League champions, the Boston Beaneaters.
February 26 – Tex Jones, 53, played nine games for the Chicago White Sox in 1911.
March
March 2 – Walter Prince, 76, first baseman who played from 1883 to 1884 for the Louisville Eclipse, Detroit Wolverines and Washington Nationals.
March 4 – Jack Taylor, 64, pitcher for the Chicago Orphans/Cubs and St. Louis Cardinals from 1898 to 1907, who won twenty or more games in four seasons, hurled 187 consecutive complete games between 1901 and 1906, and was a member of the world champion 1907 Cubs.
March 6 – Rube Lutzke, 40, third baseman for the Cleveland Indians from 1923 to 1927, who led the American League in putouts and assists in the 1923 season.
March 7 – Stephen McKeever, 84, co-owner of the Brooklyn Dodgers since 1912 and club president since 1932.
March 13 – Rube Ellis, 52, left fielder who hit .260 in 555 games for the St. Louis Cardinals from 1909 to 1912.
March 18 – Milo Netzel, 51, third baseman/left fielder for the 1909 Cleveland Naps of the American League.
March 20 – Bob Fothergill, 40, left fielder for the Tigers, White Sox and Red Sox from 1922 to 1933, whose .325 career average ranks him for 41st place on the Major League all-time list.
March 24 – Joe Dolan, 65, backup infielder for the Colonels, Phillies and Athletics between the 1896 and 1901 seasons.
March 25 – Al Burris, 64, pitcher for the 1894 Philadelphia Phillies.
March 29 – Tillinghast L'Hommedieu Huston, 70, civil engineer and businessman who was the co-owner, with Jacob Ruppert, of the New York Yankees from 1915 to 1923.
March 30 – Dasher Troy, 81, second baseman for five seasons, most notably for the 1884 American Association champs, the New York Metropolitans.
April
April 3 – Charlie Brown, 66, pitcher for the 1897 Cleveland Spiders of the National League.
April 6 – J. B. Young, 80, pitcher who appeared in one game with the 1892 St. Louis Browns of the National League.
April 11 – Cristóbal Torriente, 44, All-Star Cuban right fielder in the Negro leagues who batted .339 lifetime.
April 17 – Alex Beam, 68, pitcher for the 1889 Pittsburgh Alleghenys of the National League.
April 20 – Tim O'Rourke, 73, backup infielder who played from 1890 through 1894 for the Syracuse Stars, Columbus Solons, Baltimore Orioles, Louisville Colonels and St. Louis Browns.
April 30 – Sun Daly, 73, outfielder for the 1892 Baltimore Orioles, who earned his nickname because he never wore sun glasses.
May
May 11 – Buzz Murphy, 43, outfielder who played from 1918 to 1919 with the Boston Braves and the Washington Senators.
May 21 – Sam Childs, 76, first baseman for the 1883 Columbus Buckeyes of the American Association.
May 21 – Silver King, 70, pitcher who had three 30-win seasons for the 1887–89 St. Louis Browns and another for the 1890 Chicago team in the Players' League, who is regarded as the first sidearm pitcher.
May 22 – Harry Lumley, 57, right fielder and manager who spent his entire career with the Brooklyn Superbas in the National League from 1904 to 1910, while leading the league with 18 triples and nine home runs during his rookie season.
June
June 12 – Josh Reilly, 70, second baseman for the 1896 Chicago Colts of the National League, who later managed in the minor leagues.
June 12 – Buck Thrasher, 48, right fielder who hit .255 in 30 games with the Philadelphia Athletics from 1916 to 1917.
June 20 – Pat Newnam, 57, first baseman who played from 1910 to 1911 for the St. Louis Browns of the American League.
June 25 – Bumpus Jones, 68, pitcher for the Cincinnati Reds and New York Giants from 1892 to 1893, who hurled a no-hitter against the Pittsburgh Pirates in the 1892 season.
June 27 – Jerry Donovan, 61, backup catcher for the 1906 Philadelphia Phillies.
July
July 4 – Chief Roseman, 82, outfielder for six different teams between 1882 and 1890, who also managed the St. Louis Browns in his last major league season.
July 9 – George Dickerson, 46, pitcher for the Cleveland Indians in the 1917 season.
July 21 – Carl Spongberg, 54, pitcher for the 1908 Chicago Cubs.
July 27 – Milt Reed, 48, shortstop/second baseman who played between 1911 and 1914 with the Cardinals and Phillies, and for the Brooklyn Tip-Tops of the Federal League in 1915.
July 31 – Bill Carney, 64, right fielder who played briefly for the Chicago Cubs in the 1904 season.
July 31 – Doc Miller, 55, Canadian outfielder who posted a .295 average from 1910 through 1914 for the Chicago Cubs, Boston Doves/Rustlers/Braves, Philadelphia Phillies and Cincinnati Reds, while leading the National League with 192 hits in the 1912 season.
August
August 1 – Al Munro Elias, 67, who along with his brother Walter founded in 1913 the Elias Sports Bureau, official statistician of the National League.
August 1 – Tug Thompson, 81, Canadian outfielder/catcher for the 1882 Cincinnati Red Stockings and the 1884 Indianapolis Hoosiers, and a member of the 1882 American Association Champion team.
August 2 – Jim Curry, 52, second baseman who played in part of three seasons for the Philadelphia Athletics, New York Highlanders and Detroit Tigers.
August 11 – Cliff Hill, 45, pitcher for the Philadelphia Athletics during the 1917 season.
August 30 – Gene Moore, 52, pitcher who posted a 2-2 record and a 4.76 ERA for the Pittsburgh Pirates and Cincinnati Reds between 1909 and 1912.
September
September 7 – Lee King, 44, outfielder for the Philadelphia Athletics (1916) and the Boston Braves (1919).
September 19 – Pink Hawley, 72, pitcher who posted a 167-179 record and a 3.96 ERA in 393 games with the Browns, Pirates, Reds, Giants and Brewers from 1892 to 1901.
September 27 – Cy Ferry, 60, pitcher who played from 1904 to 1905 for the Detroit Tigers and Cleveland Naps of the American League.
September 28 – Bill Rollinson, 82, catcher for the 1884 Washington Nationals of the Union Association.
October
October 3 – Morgan Murphy, 71, catcher and noted sign stealer for 11 seasons, from 1890 to 1901.
October 4 – Fred Doe, 74, pitcher who played for the Pittsburgh Burghers and the Buffalo Bisons of the Players' League during the 1890 season.
October 16 – Joe Knight, 79, Canadian-born outfielder who finished sixth in the 1890 National League batting race with a .312 average.
October 24 – George Borchers, 69, pitcher for the Chicago White Stockings (1888) and the Louisville Colonels (1895).
October 29 – Tom Daly, 72, catcher/second baseman for five teams of three different leagues, who posted a .278 average in 1568 career games played between 1884 and 1903.
October 29 – Babe Towne, 58, backup catcher for the 1906 Chicago White Sox.
November 3 – Milt Scott, 77, first baseman who played between 1882 and 1886 for the Chicago White Stockings, Detroit Wolverines, Pittsburgh Alleghenys and Baltimore Orioles.
November 10 – Chet Spencer, 55, outfielder for the 1906 Boston Beaneaters of the National League.
November 11 – Fred Hartman, 70, third baseman who posted a .278 average and 333 RBI between 1894 and 1902 for the Pirates, Browns, Giants, White Sox and Cardinals.
November 12 – Andy Harrington, 49, pitcher who played for the Cincinnati Reds in the 1913 season.
November 14 – Les Nunamaker, 49, catcher for the Red Sox, Yankees, Browns and Indians from 1911 to 1922, who in 1914 threw out three baserunners attempting to steal in the same inning, to become the only 20th-century catcher to accomplish this feat at major league level.
November 21 – Polly Wolfe, 50, backup outfielder who played in 1912 and 1914 for the Chicago White Sox.
December
December 3 – Guy Hecker, 82, American Association pitcher/first baseman who won the Triple Crown as a pitcher in 1884 and a batting title in 1886 while hurling a no-hitter in 1882; one of two pitchers to hit three home runs in a single game (along Jim Tobin) and the only pitcher in Major League Baseball history to collect six hits in a nine-inning game.
December 7 – Tom Kearns, 79, second baseman/catcher who played between 1880 and 1884 for the Buffalo Bisons and Detroit Wolverines.
December 19 – Art Griggs, 54, first baseman/outfielder for the Browns, Naps, Tip-Tops and Tigers between the 1909 and 1918 seasons.
December 24 – Luke Lutenberg, 74, first baseman for the 1894 Louisville Colonels.
December 24 – Bill Yohe, 60, first baseman who played for the Washington Senators of the American League during the 1909 season.
