Most wins in a season: 5 in 1943
Most losses in a season: 10 in 1943
The Duluth Heralds, a minor league baseball team, played in the Twin Ports League between 1943 and 1943.
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.