https://www.irishracing.com/news?headline=O-Brien-s-colt-very-impressive-in-Eclipse&prid=219318

St Mark’s Basilica ran out a brilliant winner of the Coral-Eclipse at Sandown Park.

Only four went to post for the Group One feature, run on good to soft ground, but it was a high-class quartet, and Champion Stakes winner Addeyyb led them from the stalls.

The field moved in single file until things got more serious after turning for home, where Mishriff took a slight advantage.

But Ryan Moore had worked the French Guineas and Derby winner into a position to pounce — and once he asked Aidan O’Brien’s three-year-old to quicken the response was immediate.

Stretching clear, the heavily-backed Siyouni colt (even-money favourite) won by three and a half lengths from Addeyyb, with Mishriff another neck back in third.