3rd The NL appoints 2 former players as umpires: OF Sherry Magee and 2B Albert “Dolly” Stark. It is a type of vindication for Magee, who was suspended for hitting an umpire in 1911.
SS Jimmy Cooney gets to spend his last ML season with his brother Johnny when the Cards sell him to the Boston Braves.
11th The Giants and Pirates swap pitchers: Burleigh Grimes for Vic Aldridge. Grimes, 19–8 with the Giants, will lead the NL in wins in 1928 with 25 after his return to Pittsburgh. Aldridge holds out till May 3, and then will win just 4 games for New York.
14th The ML Advisory Council allots $50,000 to develop a national championship program run by the American Legion.