Mason Raymond is doing his best to turn a professional tryout agreement into a full-time job with the Maple Leafs, scoring a goal and setting up one by Nazem Kadri before Dave Bolland scored the game-winning goal midway through the third period at Canadian Tire Center.
Bolland, acquired from the Chicago Blackhawks during the summer, had his back to the net when he beat Nathan Lawson with a backhander at 10:25 of the third period to break a 2-2 tie. The Maple Leafs are 2-0-1 in their preseason games.
Ottawa's Fredrik Claesson scored the only goal of the first period. Raymond then assisted on Kadri's goal and scored one to give Toronto a 2-1 lead late in the second period, only to have Andre Petersson tie the game seven seconds before intermission.
"I thought after the halfway point that the Leafs took over the game," Senators coach Paul MacLean said. "They played harder than we did and worked harder than we did in the second half of the game."
Toronto goaltender Jonathan Bernier left the game after one period with an undisclosed injury. Kadri left in the third with a hand injury.