After finishing second in both preliminary legs, Miss Poppycock scored the 10-1 upset for Brethour with stablemate Murrayfield finishing second in 1:54.1.
Rock N Roll Xample (Billy Davis, Jr.) was the quickest to the front before the opening station in a quick :26.4.
Heading towards the half, Lyonsaura () angled out of third to take over command to lead past the mid-way point in :55.3.
Shutthefrontdoor () began the first-over attack heading to three-quarters, giving live cover to post time favourite - and the undefeated - Sayitall BB ( ). Brethour's entries were also coming from off the pace with Murrayfield sitting third-over and Miss Poppycock fourth-over.
Lyonsaura led her nine rivals past three-quarters in 1:24.1 and into the stretch, but her strides began to shorten as Sayitall BB, Murrayfield and Miss Poppycock were coming from the backfield.
Miss Poppycock had the most momentum in deep stretch and was able to convert the winning effort over stablemate Murrayfield by half a length, with Winbak Ella () finishing third.
Miss Poppycock, a four-year-old daughter of, is owned by Scarff Legacy Stables. The pacing miss celebrated her biggest victory in her career as her bankroll now sits at $86,085. She has amassed a 2-2-0 record from four starts this season.
She paid $22.50 to win.
by Greg Gangle for WEG