15th In the opening match of a home and home series, a crowd of 4,000 see the Atlantics score 4 in the 9th to beat the Eckfords, 17–15. Eckford pitcher Frank Pigeon tells his team before the match to “go in and play the game just as if you are playing with a common club.”
22nd On a damp and cloudy day, the Eckfords hand the Atlantics just their 2nd loss of the year, 20–15. The Ecks break a 13–13 tie with 7 runs in the 7th. “[the match] brought together nearly 5,000 spectators, notwithstanding the cold weather” (NY Times, as noted by Craig Waff)
The Nassau Base Ball Club of Princeton University plays a 42–42 tie game against a team of former Yale and Princeton collegians.
29th In the match for the 1860 whip-pennant, emblematic of the championship of the U.S., the Atlantics top the Eckfords, 20–11 before a crowd estimated at 6,000. With the game tied at 5 each after 5, the Atlantics score 6 in the 6th, 5 in the 7th, and 4 in the 8th to win. Asa Brainard of the Excelsior club umps the game. As agreed upon, all umpires are players from another club.