LAST Sunday’s Group 2 Prix Eugene Adam-Grand Prix de Maisons-Laffitte was an interesting contest for several reasons. First of all the winner Dariyan is a colt very much on the upgrade. He was giving a terrific boost to the Juddmonte Grand Prix de Paris winner Erupt who racing manager Alan Cooper reported last Wednesday to be “in great shape after the race” before his preparation for the Prix Niel and the Qatar Arc de Triomphe.