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.

1890 Regular Season Results

Date    OpponentResultScoreRecord
8/27vs StL BrownsL  10-11 0-1
8/28vs StL BrownsW  6-2 1-1
8/29vs StL BrownsL  2-6 1-2
8/30vs StL BrownsL  4-7 1-3
9/1vs ColumbusL  0-7 1-4
9/1vs ColumbusT  6-6 1-4
9/2vs ColumbusT  6-6 1-4
9/3vs ToledoL  2-4 1-5
9/4vs ToledoL  2-8 1-6
9/6vs ToledoT  2-2 1-6
9/8vs LouisvilleW  3-1 2-6
9/9vs LouisvilleL  4-9 2-7
9/13vs PhiladelphiaL  2-4 2-8
9/13vs PhiladelphiaW  18-6 3-8
9/14at PhiladelphiaL  0-6 3-9
9/16at PhiladelphiaW  5-1 4-9
9/19at ColumbusL  4-9 4-10
9/20at ColumbusW  5-3 5-10
9/20at ColumbusL  2-3 5-11
9/21at ColumbusW  7-6 6-11
9/21at ColumbusL  4-7 6-12
9/23at ToledoW  7-4 7-12
9/24at ToledoW  7-6 8-12
9/25at ToledoL  4-7 8-13
9/27at StL BrownsL  5-7 8-14
9/28at StL BrownsW  4-2 9-14
9/28at StL BrownsL  1-8 9-15
9/30at LouisvilleL  0-1 9-16
10/1at LouisvilleT  5-5 9-16
10/4at RochesterW  5-2 10-16
10/8vs SyracuseL  5-6 10-17
10/8vs SyracuseL  4-6 10-18
10/9vs SyracuseW  6-3 11-18
10/10vs RochesterW  3-1 12-18
10/11vs RochesterL  3-4 12-19
10/13vs RochesterW  4-0 13-19
10/15vs RochesterW  16-11 14-19
10/15vs RochesterW  9-5 15-19