1913 - The New York Giants give the New York Yankees permission to use the Polo Grounds for the 1913 American League season only, as their lease on the Hilltop Park has expired. The Yankees will remain as tenants at the Polo Grounds through 1922 American League season, then moving to the new Yankee Stadium in the Bronx in April of 1923.
1918 - The New York Yankees traded C Les Nunamaker, 3B Fritz Maisel, INF Joe Gedeon, Pitchers Nick Cullop and Urban Shocker to the St. Louis Browns in exchange for P Eddie Plank and 2B Del Pratt. Eddie Plank, a 300-game winner, retires from MLB, but Dell Pratt gives the Yankees three good years of services at second base. Urban Shocker is the gem, posting four straight seasons of 20 or more wins with the Browns. Fritz Maisel, who the Yankees refused to trade in early 1916 for either Red Sox OF Tris Speaker (and cash) or White Sox OF Shoeless Joe Jackson, will hit just .232 in 90 games and be released by the team.
1927 - The New York Yankees released veteran reserve C Hank Severeid. He had retired from MLB. Hank hit .268 in 41 games for the 1927 Yankees, after being obtained from the Washington Senators.
1929 - The New York Yankees announced that they would be putting numbers on the backs of their team uniforms, becoming the 1st baseball team to start continuous use of the numbers. The first numbers are based on positions in the batting order; thus, Babe Ruth will wear number 3 and Lou Gehrig number 4. In a few weeks, the Cleveland Indians announce that they, too, will put numbers on their player uniforms. By 1931, all American League teams will use them. It will be 1933 before all National League players are numbered.









