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
DET
1887 NL Champion Detroit Wolverines
z: best record, c: conference winner, y: division winner, w: wildcard, x: clinched playoff spot

World's Championship Series

Best of 15-game series
Home/Away matchups are not known
Date    OpponentResultScoreSeries
10/10at StL BrownsL  1-6 0-1
10/11at StL BrownsW  5-3 1-1
10/12vs StL BrownsW  2-1
13
2-1
10/13vs StL BrownsW  8-0 3-1
10/15vs StL BrownsL  2-5 3-2
10/16at StL BrownsW  9-0 4-2
10/17at StL BrownsW  3-1 5-2
10/18vs StL BrownsW  9-2 6-2
10/19vs StL BrownsW  4-2 7-2
10/20at StL BrownsW  -
SPD
7-2
10/21at StL BrownsL  4-11 7-3
10/21at StL BrownsW  13-3 8-3
10/22vs StL BrownsL  1-5
7
8-4
10/24vs StL BrownsW  6-3 9-4
10/25at StL BrownsW  4-3 10-4
10/26at StL BrownsL  -1 10-5