National League officials meet with Charles “Chief” Zimmer, Pittsburgh Pirates catcher and the president of the Players Protective Association, and agree to contract concession

1901 – National League officials meet with Charles “Chief” Zimmer, Pittsburgh Pirates catcher and the president of the Players Protective Association, and agree to contract concessions granted by the American League for NL players who will agree not to sign with AL clubs. Zimmer promises suspensions for members of the union who jump to the new league.