Donnacha O'Brien trainee Porta Fortuna (Ire) (Caravaggio--Too Precious {Ire}, by Holy Roman Emperor {Ire}) posted a debut win over five furlongs at the Curragh last month and punched a ticket to Royal Ascot with a determined success in Sunday's G3 Coolmore Stud Irish EBF Fillies Sprint S. Naas. She was positioned within range of the leaders in a close eighth through the early stages and tanked forward once past halfway. Shaken up at the quarter-mile marker, the 8-1 chance quickened smartly to seize control approaching the final furlong and was...