Observations on the European Racing Scene turns the spotlight on the best European races of the day, highlighting well-pedigreed horses early in their careers, horses of note returning to action and young runners that achieved notable results in the sales ring. Today's Insights features a pair of siblings to young Group 1-winning sires. 1.15 Newmarket, Mdn, £8,000, 2yo, c/g, 8fT QUINTILLUS (GB) (Dubawi {Ire}) debuts for Godolphin and Charlie Appleby and is a half-brother to the operation's G1 Prix Jean-Luc Lagardere-winning sire Ultra (Ire) (Manduro {Ger}). Among his rivals is...