On May 24, 1907 — At the Polo Grounds‚ Boston pitcher Pat Flaherty clubs the first grand slam by a National League pitcher when he connects in the 2nd inning off Hooks Wiltse of the Giants. Boston wins‚ 7 – 5.
Source:
Baseball Reference May 24
At the Polo Grounds, 25,000 see the Giants win twice over the Reds and increase their National League lead to three games. Hal Schumacher, the June graduate of St. Lawrence, wins the opener, 7 – 1, giving up a run on an error. New York scores five runs in two innings to knock out Ray Kolp. The Giants take the second game, 6 – 3, as Johnny Vergez drives in four runs. Fred Fitzsimmons is the winner over Larry Benton, in relief of Benny Frey.
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June 25, 1933
