Observations on the European Racing Scene turns the spotlight on the best European races of the day, highlighting well-bred horses early in their careers, horses of note returning to action and young runners that achieved notable results in the sales ring. Sunday's Observations features a half-brother to the multiple Grade I-winning sire Up To The Mark. 16.55 Curragh, €20,000, Mdn, 3yo/up, c/g, 8fT Aidan O'Brien entry SHAFTESBURY AVENUE (Maxfield) is a $1-million Keeneland September acquisition and half-brother to multiple Grade I-winning sire Up To The Mark (Not This Time). His...