Voleuse De Coeurs got back on the winning trail in the Coolmore Vintage Crop Stakes at Navan.
Dermot Weld's filly won the Irish Cesarewitch by 10 lengths from Missunited last season, and those two again fought out the finish in this Listed race over a mile and six furlongs.
Voleuse De Coeurs was disappointing behind El Salvador on her seasonal return at Limerick, but left the 5-4 favourite back in third on this occasion.
Steps To Freedom was slightly squeezed up by the winner a furlong out but was ultimately well beaten in fourth.
Pat Smullen was still forced to keep Voleuse De Coeurs (7-4) up to her work but she eventually won going away.
Weld said: "I see her as being very progressive and possibly an outstanding stayer.
"I thought she would win and this is a race I wanted to win.
"She was very good over staying distances last year. She is entered in the Ascot Gold Cup but that might be a bit soon for here.
"She could go for the Curragh Cup and then the Irish St Leger, and she could be a Gold Cup horse next year.
"Conditions were perfect for her as she always wants a little ease in the ground."
Stubbs stamped himself a classy juvenile to follow with a runaway win the Requinto EBF Maiden.
O'Brien's colt was backed as if defeat was out of the question and delivered on his promising Curragh debut run in no uncertain terms.
Joseph O'Brien started his move two furlongs out and the 4-5 market leader powered home by four and a quarter lengths from Treadstone.
The O'Briens doubled up with Plinth in the Excelebration Maiden, who fought off the renewed challenge of Mourani to prevail by half a length.
David Wachman's True Verdict won the opening Come Racing On 8 June Maiden.
Having her second start of the campaign after running well in decent company last term and again on her Curragh comeback, the Danehill Dancer filly was never far off the pace.
Wayne Lordan stole a march on the 2-1 chance soon after the two-pole and she stretched clear to beat Wexford Opera by two and a half lengths, with Acting Talent third.
Theyturnedmedown (10-1) held Six Of Hearts' late lunge to win the navanracecourse.ie Handicap under Leigh Roche, while Joe Doyle guided Charlie Swan's Baine to a 14-1 success in the Dogs For Disabled June 8th Handicap.
Valbucca (11-2) completed a hat-trick for Willie McCreery in the Irish Stallion Farms EBF Fillies Handicap and the concluding Pour Moi EBF Maiden went to 8-13 favourite Stepwise, trained by John Oxx and ridden by Declan McDonogh.