Saint Baudolino survived an enquiry to claim the Group Three Prix de Guiche at Chantilly.
Racing in the beige silks of Godolphin's French runners for the first time, the three year old successfully stepped up into Pattern company with a narrow success under Maxime Guyon.
The Andre Fabre-trained son of Pivotal didn't make his debut until March when returning a beaten favourite at this track, a fate he was to suffer next time out at Longchamp as well.
However, he made it third time lucky at Longchamp over 10 furlongs at the end of April and overcame traffic problems, barging past the previously unbeaten leader Xanadu who was nearly brought down, to take another rung up the ladder over this furlong shorter trip with a short neck success from Sofast.
The runner-up had finished second to Dabirsim in the Group One Prix Jean-Luc Lagardere at last year's Arc meeting and had again finished behind the leading French 2000 Guineas fancy when third to Dragon's Pulse on his reappearance.
He coped well enough with the step up in trip, running on strongly to confine Derby entry and favourite Mandour to third although he had been in front 50 yards from the line.
Owned by Princess Zahra Aga Khan, Derby entry Mandour started favourite and was expected to take all the beating.
The son of Smart Strike had finished second to her father's Kesampour on debut, form which looked rock-solid with the winner going on to claim his next three starts, including the Group Two Prix Greffulhe which was won last year by Pour Moi en route to Epsom.
However, he could finish only third having set out to make the running albeit being beaten by just a short-neck and a neck with daylight back to the fourth.