Yeguada Centurion's 3-year-old colt Big Rock (Fr) (Rock Of Gibraltar {Ire}--Hardiyna {Ire}, by Sea The Stars {Ire}), who failed to nose ahead in each of his first three outings, graduated in a Feb. 2 handicap at Chantilly and repeated the dose back there in last month's Mar. 3 Listed Prix Maurice Caillault. Sent forward for a sterner test in Sunday's G3 Prix La Force at ParisLongchamp, he dented a host of lofty reputations with a game performance in the nine-furlong French Derby trial to register a career high. Big Rock...