The US men's national teamer was instrumental in his team securing three vital points in the Eastern Conference playoff race, striking for goals in the 44th and 62nd minutes to pace Columbus' victory.
Zardes got the opener on the stroke of halftime, converting a first-time volley off a cross from Derrick Etienne Jr. to give the Crew a 1-0 lead and notch his milestone 50th career regular-season goal for the club.
He then added a second just after the hour-mark in spectacular fashion, uncorking a left-footed distance shot that he curled into the top corner. Montréal's Romell Quioto pulled back a consolation goal during second-half stoppage time, making Zardes' brace the game-winning tally.
The result helped fuel Columbus' campaign to re-enter the East's seven Audi MLS Cup Playoff places. The defending MLS Cup champs are three points shy of Montréal with seven regular-season matches left to play. Zardes has now netted seven times in 18 MLS games this season.
The Crew return to action Wednesday with a trophy on the line, as they face last year's Liga MX champs Cruz Azul in the Campeones Cup at Lower.com Field (8 pm ET | ESPN2, Univision, TUDN).
The MLS Player of the Week is selected each week of the regular season through both media and fan voting in a process conducted by MLS Communications. A panel of journalists from the North American Soccer Reporters (NASR) comprises 75 percent of the vote, while a Twitter fan vote represents the remaining 25 percent of the vote. NASR consists of members of print, television, radio and online media.