This is the 1957-58 OHA Cup playoffs, for the Ontario Hockey Association's Junior D championship:
Quarter Finals[]
Best of 7
- Unionville beat Stayner
- Wellington beat Napanee 4 wins to 1.
Semi Final[]
Best of 7
- Unionville beat Wellington 4 wins to 2.
Final[]
Best of 7
| Date | Winner | Loser | Location |
|---|---|---|---|
| March 29 | Chesley 9 | Unionville 6 | Paisley |
| April 1 | Chesley 8 | Unionville 3 | Unionville |
| April 3 | Chesley | Unionville | Paisley |
| April 8 | Chesley 5 | Unionville 3 | Unionville |
Chesley Colts beat Unionville Jets 4 wins to none.