Mike Zigomanis and Joe Colborne scored on the power play for Toronto, while Carter Ashton added an empty-netter as the Marlies improved to 25-15-4 in front of 5,399 fans at Ricoh Coliseum. Colborne and Blacker each added assists, with Jake Gardiner chipping in with two of his own.
The Marlies led 1-0 after the first period and were ahead 3-1 through 40 minutes. Toronto was 2-for-5 with the man advantage, while Chicago went 0-for-2.
Chicago scored early in the third and outshot Toronto 12-7 in the third, but Rynnas was sharp in making a couple of point-blank saves with the game on the line.
Zigomanis opened the scoring when he finished off a give-and-go with Tim Connolly by one-timing a shot past Climie's blocker for a power-play goal at 16:27 of the first period.
Colborne gave the Marlies a 2-0 lead when he squeezed a wraparound between Climie's skate and the right goalpost for another power-play marker at 4:28 of the second period. The Wolves closed the gap less than a minute later when Sweatt one-timed a high shot from the slot past Rynnas at 5:14. Blacker made it 3-1 for Toronto when he fired a shot from the left faceoff circle past Climie at 14:17 of the second.
Gordon pulled the Wolves to within a goal when he snapped a shot past Rynnas at 5:23 of the third period, but Ashton closed out the scoring with an empty-net goal at 18:55.
The Marlies host the Texas Stars on Sunday, while the Wolves welcome the Charlotte Checkers on Thursday.