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. Sunday's Observations features the returning Congo River (Mendelssohn), who was second on debut. 1.55 Listowel, Mdn, €15,000, 2yo, 6f 60yT CONGO RIVER (Mendelssohn) bids to build on a debut second at The Curragh last month and provide his sire with his first winner. Ballydoyle's $400,000 Keeneland September graduate is...