Eziyra picked up from where she left off last season with a cosy success in the Grenke Finance Ballyroan Stakes at Leopardstown.
A fine third to Enable in the Darley Irish Oaks, the Dermot Weld-trained filly ended the campaign with a pair of Group Three victories, latterly at this track in September.
Making her first start since then back at the same level, the daughter of Teofilo travelled in last of the four runners, with the quartet taken along in single file by The King.
Yucatan moved up to challenge off the bend, but a patient Declan McDonogh had every moved covered on the 9-4 joint-favourite, joining issue and eventually getting on top inside the final 200 yards.
Two and a half lengths was the margin of victory from Stellar Mass, who edged Yucatan for second.
Weld said: “It was a very pleasing performance considering she hadn’t run for 11 months since winning here. I think she’s strengthened a lot since last year.
“She ran an excellent race behind Enable when she was placed in the Irish Oaks, apart from her three Group wins. This was the plan to start back here, and she has a number of Group One entries in the coming weeks and months.
“She could run in the Yorkshire Oaks, but we’ll have to see how she comes out of this race. The Fillies And Mares (at Ascot on Champions Day) would be a definite possibility for her.
“That was fast ground and she bounced off it, but she’s pretty adaptable ground-wise. The Breeders’ Cup is also worth considering.”