The Giants sweep their third doubleheader in a row, beating Brooklyn, 4 – 2 and 9 – 1. Hooks Wiltse wins the opener and Christy Mathewson takes the nightcap, leaving after five innings with a 7 – 0 lead.

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On June 25, 1909 The Giants sweep their third doubleheader in a row, beating Brooklyn, 4 – 2 and 9 – 1. Hooks Wiltse wins the opener and Christy Mathewson takes the nightcap, leaving after five innings with a 7 – 0 lead.   Source Baseball Reference June 25