Most wins in a season: 65 in 1902
Most losses in a season: 83 in 1912
The Helena Senators, a minor league baseball team, played in the Montana State League, Pacific Northwest League, Pacific National League, Northwestern League, Pacific Coast International League, Northwestern International League, Western International League, Utah-Idaho (Intermountain) League, Inter-Mountain League and Union Association between 1900 and 1914.
|1900||Helena Senators||Montana State League||39||33||Roster||Stats|
|1902||Helena Senators||Pacific Northwest League||65||54||Roster||Stats||25,000||420|
|1903||Helena Senators||Pacific National League||40||62||Roster||Stats|
|1909||Helena Senators||Inter-Mountain League||43||19||Roster||Stats|
|1911||Helena Senators||Union Association||60||78||Roster||Stats|
|1912||Helena Senators||Union Association||50||83||Roster||Stats|
|1913||Helena Senators||Union Association||52||67||Roster||Stats|
|1914||Helena Senators||Union Association||27||53||Roster||Stats|
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.