Sheik Mohammed has dramatically closed down his Godolphin stable following a series of disastrous results at the York May Meeting. There are fears that a mystery virus has taken a vice-like grip on the yard that last year carried off the trainers' title with a sustained run of success. Classic Cliche, last year's Gold Cup winner, and Asas, one of the stable's leading Derby contenders, were well-fancied and expected to go close in their respective races, the Yorkshire Cup and the Michael Seely Glasgow Stakes. But both finished stone-motherless last - Classic Cliche was tailed off after going out like a light at the three-furlong pole - leaving the Dubai team searching for answers to one of the Turf's most baffling reversals. If, as suspected, a bug has taken a hold in the once-formidable yard, veterinary tests are not showing the nature of it. 'We test for everything, just as we do in Dubai, the but the tests have shown nothing,' Sheik Mohammed said. 'Also, the horses are not finishing tired,' added the owner and creator of the Godolphin concept. Simon Crisford, the racing manager for Godolphin, said: 'The horses are travelling to the three-furlong marker and dying. If they were travelling to the furlong pole, you would be saying they needed the race. 'We haven't changed anything from last year. We feel bad about it because we feel we have a good team of horses this year. 'Prior to this, I thought they might have been suffering from the 'too slow, not-good-enough virus', but after today I'm sure it is something else. We would not be running them if tests showed beforehand there was a problem,' he added. The catalogue of disappointment on Thursday was extensive. Monsajem, Godolphin's highly rated juvenile, finished a battling fourth to 33-1 outsider Belladera in the Travelling The Turf Racecourse of the Year 1997 Maiden Stakes. And apart from the dismal performances turned in by Classic Cliche in the Yorkshire Cup and Asas in the Michael Seely Memorial Glasgow Conditions Stakes, Godolphin's other runners ran without sparkle. Blue Duster, one of their big guns, finished a ring-rusty third behind the impressive Royal Applause and Farhana in the Duke Of York International Factors Stakes, while Diffident came in fifth in that race. Godolphin scratched all their runners this weekend. They had declared Alhaarth and Allied Forces for yesterday's Juddmonte Lockinge Stakes at Newbury, as well as Shuhrah, Swiss Law and Bold Demand in separate races at Newmarket. Now they, and their entries today and tomorrow, will be absentees as key Godolphin figures, including Crisford and highly regarded vet Mike Hauser, decide on what remedy can be found. No stable, no matter how powerful or sophisticated, is immune from viruses and bugs which plague racing yards the length and breadth of this country, and elsewhere, it now seems. Godolphin are renowned for their professionalism, so the stable's next move will be monitored with interest.