| | | |
| November 3, 2017 | L | Cornwall Nationals 4 at Watertown Wolves 5 | Final |
| November 4, 2017 | W | Watertown Wolves 2 at Cornwall Nationals 5 | Final |
| November 18, 2017 | W | Watertown Wolves 2 at Cornwall Nationals 5 | Final |
| November 19, 2017 | W | Watertown Wolves 3 at Cornwall Nationals 5 | Final |
| November 24, 2017 | L | Cornwall Nationals 2 at Port Huron Prowlers 6 | Final |
| November 25, 2017 | W | Cornwall Nationals 3 at Port Huron Prowlers 2 | Final |
| November 26, 2017 | W | North Shore Knights 5 at Cornwall Nationals 7 | Final |
| November 30, 2017 | L | Cornwall Nationals 0 at Watertown Wolves 4 | Final |
| December 2, 2017 | L | Watertown Wolves 7 at Cornwall Nationals 6 | Final |
| December 9, 2017 | W | Danville Dashers 4 at Cornwall Nationals 8 | Final |
| December 10, 2017 | W | Danville Dashers 5 at Cornwall Nationals 6 | Final |
| December 15, 2017 | W | Cornwall Nationals 5 at Watertown Wolves 3 | Final |
| December 16, 2017 | W | North Shore Knights 4 at Cornwall Nationals 5 | Final |
| December 22, 2017 | | Danville Dashers 0 at Cornwall Nationals 0 | Forfeit |
| December 23, 2017 | L | Port Huron Prowlers 2 at Cornwall Nationals 1 | Final |
| December 26, 2017 | W | Cornwall Nationals 5 at Watertown Wolves 3 | Final |
| December 29, 2017 | W | Cornwall Nationals 6 at Twin City Thunderbirds 5 | Final |
| December 30, 2017 | W | Cornwall Nationals 4 at Twin City Thunderbirds 1 | Final |
| December 31, 2017 | L | Cornwall Nationals 1 at Twin City Thunderbirds 2 | Final |
| January 7, 2018 | W | North Shore Knights 4 at Cornwall Nationals 5 | Final |
| January 13, 2018 | L | Watertown Wolves 5 at Cornwall Nationals 4 | Final |
| January 14, 2018 | | Cornwall Nationals 0 at North Shore Knights 0 | Forfeit |
| January 20, 2018 | L | Cornwall Nationals 0 at Port Huron Prowlers 3 | Final |
| January 26, 2018 | W | Cornwall Nationals 6 at Danville Dashers 2 | Final |
| January 27, 2018 | L | Cornwall Nationals 0 at Danville Dashers 3 | Final |
| January 28, 2018 | L | Cornwall Nationals 1 at Danville Dashers 4 | Final |
| February 1, 2018 | L | Cornwall Nationals 2 at Port Huron Prowlers 6 | Final |
| February 2, 2018 | L | Cornwall Nationals 2 at Port Huron Prowlers 8 | Final |
| February 3, 2018 | W | Watertown Wolves 3 at Cornwall Nationals 7 | Final |
| February 9, 2018 | L | Cornwall Nationals 4 at Twin City Thunderbirds 5 | Final |
| February 10, 2018 | W | Cornwall Nationals 5 at Twin City Thunderbirds 4 | Final |
| February 11, 2018 | L | Cornwall Nationals 3 at Twin City Thunderbirds 4 | Final |
| February 16, 2018 | L | Port Huron Prowlers 11 at Cornwall Nationals 1 | Final |
| February 17, 2018 | W | North Shore Knights 6 at Cornwall Nationals 13 | Final |
| February 24, 2018 | | Watertown Wolves at Cornwall Nationals | Cancelled |
| February 25, 2018 | | Watertown Wolves at Cornwall Nationals | Cancelled |
| March 3, 2018 | | North Shore Knights at Cornwall Nationals | Cancelled |
| March 4, 2018 | | Danville Dashers at Cornwall Nationals | Cancelled |
| March 9, 2018 | | Twin City Thunderbirds at Cornwall Nationals | Cancelled |
| March 10, 2018 | | Twin City Thunderbirds at Cornwall Nationals | Cancelled |
| March 16, 2018 | | North Shore Knights at Cornwall Nationals | Cancelled |
| March 17, 2018 | | Watertown Wolves at Cornwall Nationals | Cancelled |
| March 18, 2018 | | Watertown Wolves at Cornwall Nationals | Cancelled |
| March 25, 2018 | | Watertown Wolves at Cornwall Nationals | Cancelled |
| March 29, 2018 | | Cornwall Nationals at Port Huron Prowlers | Cancelled |
| March 30, 2018 | | Cornwall Nationals at North Shore Knights | Cancelled |
| March 31, 2018 | | Danville Dashers at Cornwall Nationals | Cancelled |
Cornwall Nationals Schedule
