Josh Leivo, Spencer Aboott and Jerrod Smithson collected two assists apiece in front of an announced crowd of 6,399 at Ricoh Coliseum.
The Marlies won their second consecutive game to improve to 36-19-5 and bolster their first-place standing in the North Division.
The game was tied 1-1 after the first period and stayed that way through 40 minutes.
A turnover by the Marlies in the defensive zone led to the game's opening goal. Bulldogs centre Joonas Nattinen corralled the loose puck in the corner and passed off to Courtnall, who curled into the slot and beat a screened Gibson with a backhander at 11:36.
The Marlies tied the game less than two minutes later when Leivo threaded a pass through the crease to McKegg, who lifted the puck into the gaping net for a power-play goal at 13:14.
After a scoreless second period, Carrick gave the Marlies a 2-1 edge when he beat Mayer low to the stick side with a wrist shot from the slot at 6:08 of the third period.
McKegg put Toronto up by a pair when he buried a rebound from the slot at 11:17. D'Amigo closed out the scoring with an empty-netter at 18:30
Hamilton was 0-for-2 on the power play while Toronto went 1-for-2 with the man advantage.
The Marlies and Bulldogs are off until Wednesday, when Toronto visits the Lake Erie Monsters and Hamilton hosts the Abbotsford Heat.
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