Dermot Weld hopes Sapphire can break her duck at the highest level this summer.
The five-year-old mare only met with defeat once last season, when second to Izzi Top in the Pretty Polly Stakes at the Curragh.
She finished the campaign with arguably a career-best effort when streaking to victory in the Qipco British Champions Fillies' And Mares' Stakes, and Weld would like to see her step up to the next level.
"I've got a nice team without having an obvious star, but I've got some nice fillies," Weld told At The Races.
"If I had to nominate one I'd say Sapphire. She was very good last year, she ran four times and she won three Group races rounding off at Ascot on Champions Day and we hope that she'll go all the way and be a Group One filly."