5th Connie Mack spends money to begin building another winner. He sends $40,000 and several players to Portland (Pacific Coast League) for 3B Sammy Hale.
12th Jake Ruppert agrees to buy out his partner Colonel Huston and gains full control of the Yankees.
13th The Phils buy IF Heinie Sand from Salt Lake City (PCL) for 4 players and cash. A competent SS, Sand will be the object of an alleged bribery scheme that causes another scandal.
Alarmed at the increase in HR hitting (1,054 in the major leagues, up from 936), some AL owners back a zoning system setting a minimum of 300 feet for a ball to be called a HR. The motion dies. In another action, the league requires each club to furnish 2 home uniforms per player, plus extra caps and stockings on the road, to improve the players’ appearance. In NL meetings, Charles Ebbets proposes putting numbers on players’ sleeves or caps. It’s left to each club to do as it wishes.
14th In a joint meeting, the ban on nonwaiver trades after June 15th is approved. The NL favors a 50-player limit until June 15th, the AL votes for 40. Judge Landis breaks the deadlock in favor of 40. Compensation of WS umpires is changed from a percentage of the players’ pool to a flat $2,000.
Still smarting over the rejection of the official scorer’s decision in the Ty Cobb case, the national baseball writers’ group meets and votes to back the New York group’s protest. Fred Lieb, who had filled in the AP box score giving Cobb the disputed hit, asks Ban Johnson to revise the records to .399 for Cobb. Johnson complains of not receiving box scores from some writers, who are appointed by the clubs as official scorers.
16th The Eastern Colored League (chartered as the Mutual Association of Eastern Colored Baseball Clubs) is formally organized. The league will complete 5 seasons before folding in midsummer of 1928.
23rd The American all-star team lose a game in Japan when Zensuke Shimada hits an out-of-the-park homer against Waite Hoyt and the Mita Club defeats the All-Americans, 9-3. It was the first loss by a team of touring U.S professionals in Japan. The Japanese press suggest the Americans, who made four errors, of not playing hard to encourage fan interest.
25th On their tour of the Far East, the Herb Hunter All-Americans, with Casey Stengel and Waite Hoyt among its members, beats a team of U.S. servicemen, 12-5, in Manila. In other games, the All-Americans are the first team of major leaguers to play a Chinese team, in Shanghai, and also play a Korean all-star team in Seoul, whipping them, 21–3.