The GOJHL Western Conference champion will be determined Tuesday night in St. Marys.
The host Lincolns welcome Chatham Maroons for Game 7 at the Pyramid Recreation Centre. The puck drops at 7:30 p.m.
St. Marys avoided elimination with a 6-2 win in Chatham on Sunday to tie the series.
Lincoln Moore set the tone with a shorthanded goal to start the scoring.
Kyle Morey, Jaden Lee, Jacob McLellan, Chase MacQueen-Spence and Ryan Hodkinson also scored for the Lincolns.
Sean Truby and Connor Hunt scored in the third period for the Maroons.