London scored three times, back-to-back, in the second period and defeated Waterloo 3-1 to tie the Sutherland Cup final at two game apiece.
Matthew Prucha opened the scoring for the Siskins at 1:46 of the second. Christian Polillo answered for the Nationals 16 seconds later. George Diaco's goal at 12:25 would stand as the game winner and Wes Dobbin scored at 14:34 to give the Nationals some insurance.
Matt Onuska stopped 26 shots for the Siskins. Zachary Springer earned the win with 34 saves.
Game 5 is tomorrow night in London.
