The Lincolns fell behind early and couldn't recover in a 3-1 loss to Leamington.
Thomas Michaud scored on the power play for the Flyers at 13:10 of the first period.
Cayse Ton answered for St. Marys with a power play goal of his own early in the second. Adam Jeffery put the Flyers ahead just over six minutes later.
Ryan Gagnier's power play goal at 12:28 of the third would add insurance for the host team.
The Lincolns' Kyle Curtin took the loss with 32 saves. Zach Borgiel made 29 saves for the Flyers.
