Piston Service brings in “ringer” Alexander Ronald, “a bow-legged Scot,” granted a few hours leave from his Scottish vessel in port, and Ronald scores the lone goal in a 1-0 win over Ice Delivery in a McMillan Cup semifinal.
| Year | League Champion | Knockout Cup |
| 1930 | Black Diamond | Black Diamond |
| 1931 | Dr. Reid's Electros | Dr. Reid's Electros |
| 1932 | Pittson's Grocers | Dr. Reid's Electros |
| 1933 | Black Diamond | Piston Service |
| 1934 | Piston Service | Dr. Reid's Electros |
| 1935 | Dr. Reid's United | Piston Service |
| 1936 | Westerman's Clothiers | Westerman's/Dr. Reid's (co) |
| 1937 | Montag Vikings | Montag Vikings |
| 1938 | German Society | Gilt Top Beers |
| 1939 | Hemrich Brewing | Montag Vikings |