1869 May

4th  The Cincinnati Red Stockings, baseball’s first admittedly all-professional team, play their first game of the year, defeating the Great Westerns 45–9.

23rd The Mutuals of NY journey to Boston on a 3-day visit, during which time they will beat the Tri-Mountains (69-17), the Harvards (43-11), and the Lowells (26-21).

27th The heavy hitting Atlantics of Brooklyn demolish the Olympics, 89-7. Lipman Pike hits 4 home runs for the winners.

31st The Red Stockings leave Cincinnati for a month-long Eastern tour, playing 25 games.