On April 30, 1887 — In front of nearly 10,000 at Recreation Park, the Alleghenys play their first game in the National League, defeating the defending league-champion Chicago White Stockings at Pittsburgh’s Recreation Park, 6-2. The former American Association team, who will become known as the Pirates in 1891, will post a 55-69 record, finishing in 6th place in the eight-team circuit.

Source:
National Pastime

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