Manziel, who drew the start over Antonio Pipkin, finished 18-of-25 passing for 212 yards and one interception and found it hard to find a rhythm in the face of constant pressure from Winnipeg's front.
The Blue Bombers (6-7) racked up five sacks against an overwhelmed Alouettes offensive line, and Craig Roh picked up three as he relished the opportunity to send Manziel tumbling to the turf:
With big gains through the air largely elusive, Montreal had to get creative in pursuit of a comeback after falling behind 21-6.
In the third quarter, that meant running a jet sweep throwback to Manziel for a 22-yard pickup:
Five players later, Pipkin came in and plunged into the end zone to help cut the deficit to single digits:
However, the fireworks stopped there.
Although Manziel and the Alouettes had a couple chances to knot the proceedings at 21, they couldn't generate the traction necessary to sustain a drive down the stretch.
Now 3-10, the Alouettes will try to snap a two-game losing streak when they return to the field Sept. 30 against the Saskatchewan Roughriders.