Prix de l’Arc de Triomphe 2025: horse racing – live

After a four-year run from 2018 when the Boussac winner failed to register a subsequent win of any kind, France’s most prestigious event for juvenile fillies has picked up a little recently Blue Rose Cen (2022) and Opera Singer (2023) both recording Group One wins at three and Zarigana, who was edged out by a 100-1 stable companion 12 months after trading at 1-100 in running, took the French 1,000 Guineas in May. Green Spirit, unbeaten in four starts including the Prix D’Aumale at this track last time out, leads the home challenge today and also tops the Timeform ratings, but Aidan O’Brien’s Diamond Necklace is also unbeaten – after two starts – and should give her plenty to think about. She won a Listed race on Ireland’s Champions Weekend in September and a victory for the daughter of St Mark’s Basilica would also be a big moment for her sire – a Group One winner from his first crop of juveniles. Between them, the top two in the betting take out around 70pc of the market, but there a few more runners that deserve some consideration. Ozone is also unbeaten in two, albeit at relatively minor tracks, most recently winning a Listed race at Lyon, while Karl Burke’s Aylin took the May Hill Stakes at Doncaster last time and her stable could hardly be in better form.