Keegan Latham brought the Ger Lyons-trained Lovers Quest (7-1) with a well-timed challenge to break her duck in the Lynn Lodge Stud EBF Auction Maiden.
Roshina appeared booked for victory when shooting clear over a furlong out, but she began to tread water and was swamped close home.
Lovers Quest, who finished third at Leopardstown on her debut, confirmed that promise by finishing fastest of all to beat favourite What's Up Pussycat by three-quarters of a length.
Lyons struck again as Fiery Lad justified 9/2 favouritism in the June Summer BBQ Nights At Navan Handicap, this time with Emmet McNamara in the plate. The winner will be sold to go hurdling at the end of the season.
Miss Gorica displayed a smart change of gear to trounce her rivals in the Come Racing Here Again Next Friday Handicap.
Declan McDonough stuck to the rails on the 11-2 shot and waited patiently for a gap to appear.
That came just over a furlong from the finish and Joanna Morgan's charge didn't need a second invitation, shooting through to account for Ms Victoria by three and a half lengths.
McDonogh also scored on 3/1 newcomer Motafaany for Kevin Prendergast in the Irish Stallion Farms EBF Maiden.
Paris Sue lumped top-weight to an emphatic victory in the Derrinstown Stud Handicap over the minimum distance.
Always prominent, the 10/1 chance - fourth at Tipperary on Thursday - could be called the winner from some way out and she only had to be pushed out to score.
Marcus Callaghan's evergreen mare had plenty to spare over Adriatic, with Radiator Rooney best of the rest in third.
Over at Wexford, Maysda (11-2) also defied a welter burden with a commanding performance in the J.J. Byrne Car Sales Handicap.
Having made eyecatching headway down the back, John Kiely's mare was poised to strike turning in and a decisive turn of foot carried her a length and three-quarters clear of Saucy.
Sagarich finally got her head in front where it mattered in the Tommy James Plant Hire & Civil Engineering Ltd. Maiden.
Making it 11th-time lucky, Charlie
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