1902 – At Pittsburgh, the Giants top the leading Pirates, 5 – 2, with Christy Mathewson winning in relief. Matty takes over for Dummy Taylor in the 7th, allows a tying run to score, then scores the winning run himself in the 8th.

This Day In Baseball

On May 21, 1902 — 1902 – At Pittsburgh, the Giants top the leading Pirates, 5 – 2, with Christy Mathewson winning in relief. Matty takes over for Dummy Taylor in the 7th, allows a tying run to score, then scores the winning run himself in the 8th.

Source:
Baseball Reference May 21