Most wins in a season: 27 in 1884
Most losses in a season: 29 in 1884
The Portsmouth Riversides, a minor league baseball team, played in the Ohio Association between 1884 and 1884.
Average attendance is based upon the number of actual home dates where known (most leagues from 1992 and later). Where the number of home dates is not known, the average is calculated using half the team's total games.