The two-year-old homebred notched her fourth victory in gate-to-wire fashion for trainer-owner John Smith of Woodlawn, Ont.
With Hall of Famer Jacques Hebert in the sulky, Circles lead the field to a :27.4 opening panel with Frisky Strike (Steve Byron) parked out in third and forced to make a bid for the lead.
Sent off as the 4-5 favourite, Circles refused to let anyone pass her as she remained the tempo-setter through fractions of :56.2 and 1:25.4. She opened up a four and a quarter length lead to stop the timer in 1:57, equaling her lifetime mark, which was taken in her elimination last Monday.
Cool Creek Breeze (Chris Christoforou), another elimination winner, got up for second and Tyrany Seelster (Mario Baillargeon) finished third.