With 8,402 in attendance at Rio Tinto Stadium, the Monarchs got an early goal from midfielder Sebastian Velasquez and held on for a 1-1 draw with the Vancouver Whitecaps FC 2.
That result alone would have sealed the regular season title, but the Monarchs (19-5-7, 64 points) clinched the championship when San Antonio FC tied the Tampa Bay Rowdies 1-1 in a game that finished near the 70th minute of the match in Sandy.
The Monarchs went down to 10 men in the 76th minute when defender Demar Phillips — on loan from Real Salt Lake — was sent off after a foul near the sideline.