10th The 2 leagues agree on a permanent rotation for WS play proposed by Charles Ebbets: first 2 games at one league’s park, next 3 at the other leagues park, last 2 if needed back at the first league’s park, with openers to alternate between leagues. Next year’s WS will commence at the NL city.
11th Eddie Collins signs as player-manager of the White Sox.
12th The Senators pick up 35-year-old Stanley Coveleski from Cleveland in exchange for Byron Speece and Carr Smith. Coveleski, a future Hall of Famer, will go 20–5 and lead the AL in ERA.
17th The Yankees get 4-time 20-game winner Urban Shocker from the Browns for pitchers Milt Gaston, Joe Giard, and Joe Bush. Shocker led the Browns in wins in each of the past 5 seasons and will be a mainstay on 2 pennant-winning staffs for New York. Bush had beaten the Browns 17 straight times after losing to them on June 12, 1922.
The Senators add another veteran pitcher to its staff by purchasing Dutch Ruether from Brooklyn. Ruether will go 30–13 for his year and a half in Washington.