Three-Finger Brown and Christy Mathewson hook up in a pitching duel, with the Chicago ace emerging the winner, 3 – 2. Matty’s batterymate Roger Bresnahan commits two errors to cause Mathewson to lose his first of the year. Mobbed at the Polo Grounds after the loss, umpires Hank O’Day and Bob Emslie require police protection. The crowd is egged on by manager John McGraw, who will be thrown out of games seven times this year.

This Day In Baseball

On May 21, 1907 — Three-Finger Brown and Christy Mathewson hook up in a pitching duel, with the Chicago ace emerging the winner, 3 – 2. Matty’s batterymate Roger Bresnahan commits two errors to cause Mathewson to lose his first of the year. Mobbed at the Polo Grounds after the loss, umpires Hank O’Day and Bob Emslie require police protection. The crowd is egged on by manager John McGraw, who will be thrown out of games seven times this year.

Source:
Baseball Reference May 21