The National League and the American Association faced each other in a World's Championship Series at the end of the season to determine an overall champion.
Champ
NYG
1889 AA Champion New York Giants
z: best record, c: conference winner, y: division winner, w: wildcard, x: clinched playoff spot

World's Championship Series

Best of 11-game series
Date    OpponentResultScoreSeries
10/18at NY GiantsW  12-10 1-0
10/19vs NY GiantsL  2-6 1-1
10/22at NY GiantsW  8-7
8
2-1
10/23vs NY GiantsW  10-7
6
3-1
10/24vs NY GiantsL  3-11 3-2
10/25at NY GiantsL  1-2
11
3-3
10/26at NY GiantsL  7-11
8
3-4
10/28vs NY GiantsL  7-16 3-5
10/29at NY GiantsL  2-3 3-6