Birr Castle produced another solid performance in Group company when coming home third in the G3 Prix du Prince d’Orange at Longchamp, France, on Sunday, 3 September.
Having filled the same position in the G2 Prix Guillaume d'Ornano on his previous start for Andre Fabre, the Cloth Of Stars colt soon tracked the leaders in fourth of the seven runners.
Birr Castle stayed on in the straight for Mickael Barzalona, with Horizon Dore quickening strongly to readily hit the front passing the furlong-pole before going clear for an easy win.
The Godolphin runner continued to battle for the minor places and briefly went second inside the final half-furlong, only to be passed by Mr Moliere in the shadow of the post.